What do search clues conceal?

There is an assumption that seo-technologies have already reached the search suggestions. For example, in Yandex search prompts, some search words “kitchens ...”, “interior doors ...”, “beauty salon ...” in the results slip company names. Although it is possible that these examples reflect the real picture of popular requests. Anyway, the mechanisms of cheating could be developed for this method of promotion, if you think about it is an extremely tasty place for advertising: instant issue, the result is right under the cursor, claim to popularity. Hopefully, Yandex pessimizers are preparing for such steps :)