何が何やらわからない

なにがなにやらわからない

not knowing what's what; being unable to make heads or tails

何やら

なにやら

something, for some reason, some kind of

何処やら

どこやら

somewhere

何とやら

for some reason or other; somehow

何が何でも

なにがなんでも

by all means, by all costs

何が何だか

なにがなんだか

what's what

何ら

いずら

whatever, what, what sort of, any kind of

何やら彼やら

this and that; one thing or another

何や彼や

なにやかや なにやかれや

this and that, one thing or another

何やかや

なにやかや

this and that; one thing or another; something or other; and whatnot; and the rest

何

なに なん

what

何処へやら

どこへやら

currently nowhere to be seen; unknown where it went; disappeared into thin air

何やら彼にやら

なにやらかにやら なにやらかれにやら

this and that

何がし

なにがし

certain amount; some

何がな

なにがな

something

何れ何れ

どれどれ

which (emphatic)

何時何時

いついつ なんじなんじ

when

何月何日

なんがつなんにち

what date?, what's the date?, when?

何時何分

なんじなんぷん

at what time?, when?