Nobody can tell for sure, since this is an algorithm which Google did not reveal.
But from my observation so far I assume that these are some points how it works:
- Your website must have a stable #1 ranking for a searched keyword. Especially brands: seo workers - Google Search
- The web site should be at least 18 months old.
- The number of searches for a certain keyword seem to be considered. Most probably the number of clicks that a site gets for a certain keyword too.
- The number of backlinks with the searched keyword and the anchor text seem to have influence.
- It seems like only main keywords of the site appear. That is why not all keywords of a site gets listed.
So stop bothering. There is no real method to influence that.
I hope this info helps.
P.S. Maybe the
SEO expert member
subhzash can tell you more.
