Google wiki search is getting worse (in General)

The Google search functionality from the wiki is dropping more pages recently.

For example, try searching for Bonus Times -- this used to return the appropriate page as the first result, now it doesn't return it at all. The page obviously exists still, but seems to have been purged or something. "Encumbrance" is another example I came across recently; I'm sure there's more. (Those are both pages that aren't super easy to get to by just browsing -- at least for me.)

Is there a way to set up page with all pages linked to it for crawling purposes, or a sitemap.xml or something to prevent this? Or maybe this is a good reason to roll a non-Google wiki search solution? (=

Well Encumbrance is easy to find just type Enc. And for the bonus times its simply the fighting link under the basics.

I'm not denying that everything is browsable one way or another, but the root issue that search is wonky still stands. (=

I'm pretty sure titles don't show up as results unless they're direct matches for some reason. Search "Known I" and you get nothing about the Known Issues pages, but you do get wiki page edits from people like Dude and NS. But, search for "Known Issues" and the Known Issues page is the first one. This would be the main problem I would like to get fixed.

There's an index