maybe game bug or a flaw in search system. they set restriction too much.
i used to try item search in jp version last year, i just use japanese word revita リバイタ, its enough to start the search and lists all type all revita.
yes and it is very weird
you can just use "izu" to start a search, but you can't use "wound", it says word too short... and you can use "wound tran" to find all "wound transer" and "wound trance"... other things you have to know the exact full name or it won't work... very confusing