Well I try to make sure each topic/page has a unique tag, and then I tag keywords within that. So within a page I will tag with consistent generalizable tags like #docker, #blog, #security, #auth and then underneath those I will have more specific tags like #repository_name #author_name #equipment_name.

Its more of a tiered tagging style where there are more generalizable tags are parents of more specialised tags.

It might not be the best for everyone but my brain works well with it. I can usually derive what the parent tag would be from whatever topic I'm searching back up and then find the children notes/tags from there.

It is essentially keyword search that just somewhat organized.