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Have you tried changing the Meta Titles, that way google will update the content or the visibility of the website according to the right keyword. Did it numerous times with the site(sure.bet) I was working at...

@BlueprintMarketing I found out today my website: targetedwebtraffic.com has issue with google web master tool, I deleted and added again and works again really good.

@BlueprintMarketing This is cool, I have issue with my website exactly like that and so many time google pick differnet keywords or part of keywords, This is help me understand what exactly I should do.

@tunnel7
There are one of two possible reasons for this to be happening. Your site was hacked, and keywords were injected into the HTML creating this problem.
Or, your content needs to be improved, and you need to create a semantic content network with Query and Document Templates.

it's either malware or
You have to create higher-quality content than the other guy.

This is a list of what needs to be done to improve content drastically.
How to exceed quality thresholds?
To exceed quality thresholds, implement the methodologies below.

• Use factual sentence structures. (X is known for Y → X does Y)

• Use research and university studies to prove the point. (X provides Y → According to X
  University research from Z Department, on C Date, the P provides Y)

• Be concise, do not use fluff in the sentence. (X is the most common Y → X is Y with D%)

*Include branded images with a unique composition.

• list item Have all the EXIF data and licenses of the images.

• Do not break the context across different paragraphs.

• Optimize discourse integration.

• Opt for the question and answer format.

• Do not distance the question from the answer.

• Expand the evidence with variations.

• Do not break the information graph with complicated transitions. Follow a logical order in the declarations.

• Use shorter sentences as much as possible.

• Decrease the count of contextless words in the document.

• If a word doesn't change the meaning of the sentence, delete it.

• Put distance between the anchor texts and the internal links.

• Give more information per web page, per section, per paragraph, and sentence.

• Create a proper context vector from H1 to the last heading of the document.

• Focus on query semantics with uncertain inference.

• Always give consistent declarations and do not change opinion, or statements, from web page to web page.

• Use a consistent style across the documents to show the brand identity of the document.

• Do not have any E-A-T negativity, have news about the brand with a physical address and facility.

• Be reviewed by the competitors or industry enthusiasts.

• Increase the "relative quality difference" between the source's current and previous state to trigger a re-ranking.

• Include the highest quality documents as links on the homepage, so they are visible to crawlers as early as earlier.

• Have unique n-grams and phrase combinations to show the originality of the document.

• Include multiple examples, data points, data sets, and percentages for each information point.

• Include more entities, and attribute values, as long as they are relevant to the macro context.

• Include a single macro context for every web page.

• Complete a single topic with every detail, even if it doesn't appear in the queries and the competitor documents.

• Reformat the document in an infographic, audio, or video to create a better web surface coverage.

• Use the internal links to cover the same seed query's subqueries with variations of the phrase taxonomies.

• Use fewer links per document while adding more information.

• Use the FAQ and article structured data to consistently communicate with the search engine from every level and for every data extraction algorithm.

• Have a concrete authorship authority for your own topic.

• Do not promote the products while giving health information.

• Use branded CTAs by differentiating them from the main context and structure of the document.

• Refresh at least 30% of the source by increasing the relative difference. (Main matter is explained in the full version of the SEO Case Study.)

See: https://www.oncrawl.com/technical-seo/importance-quality-thresholds-predictive-ranking/

Please let me know if I can be of help,
Tom