|No offense, but I doubt that those pages you're referring to ever existed. Pages only get merged with other pages but never get deleted. The only time I recall that a page did get deleted was when it had a duplicate page; this is something that can almost never happen with the database, and even if it did there would still obviously be another page in existence (because the duplicate is the one that is deleted).
i try search "Little White Butterflies" in search box and the result only 2 can be access that is Aerobics Harem and Mromantik.
The search box will only show the most recent updates. Those are the only recently-updated titles that have series pages to begin with. As blakraven66 said the database is mainly user-dependent; if users do not bother to create series pages then there won't be anything to link to.
could you revert it back to before, why block it. It's information we talk in here.
or maybe my account is locked for something like that?
As far as I know there are no special permissions needed to view hentai.
maybe because hentai manga thing
No, there is no such thing going on. I am also a regular hentai manga reader and a release moderator so I would know.