Search fails to find many entries

I'm guessing there is some sort of indexer program that's supposed to create the search databases and I'm guessing it's failing. Not all entries are affected, but a number of newer items cannot be found when searching.

I went through the main page and searched for a number of entries in the feed. This is what returned.

Not Found:
Weekly Kairakuten Key-Visual Collection 71
A Thousand Middle Fingers
Animal-Eared Fortune Teller ~The Water That Bonds~
Animal-Eared Fortune Teller ~The Story So Far~
Falling in Love at the Brothel
Pink Answer
I've Been Watching You
Feelings & Facades
Old Friend, New Lover
X-Eros Girls Collection [Anything passed 110]
An Awkward Repayment
-- Ok. I think that's enough to show the point.

Found:
All I Did Was Wear My Skirt Short
First Anniversary
Good Fucking Friends
The World's Hottest Magic Show
-- There were a lot more not found between each of these.

I searched for the word "childhood" to find childhood friends and search returned nothing, but there are a LOT of childhood friend doujins with that word in the title....idk why it didn't find anything at all