Something wrong with the search script. When I searched "yahari" I get no results when I clearly should get atleast 4 results. When I do an advanced title search it seems to be working though.

http://www.mangaupdates.com/series.html?id=83813

That's because the releases were input with it's English title "My Youth Romantic Comedy Is Wrong as I Expected"

Still it is a bug since all the titles were added in the manga page but only the English title is recognized. The main title in the manga page happens to be "Yahari Ore no Seishun Rabukome wa Machigatte Iru. - Mougenroku" but it is completely not recognized in the search and the English title happens to be one of the secondary titles in the page. At least search for "yahari" should of been recognized as 4 out of the 5 title variations of this manga have that as part of the title.

The primary search box at the top-right defaults to releases only. If you wish to search for series titles, you must search under series. Either way, it will only do exact name matching.

This is not a bug. This is intentional. We are not changing this functionality.

A just ruler amongst tyrants