摸不著頭緒

摸不著 moˉ buˋ zhaoˊ

(Can't get, Can't touch) Can't touch, Can't get a grip on, Can't get head around

不著 buˋ zhaoˊ

(Can't, Couldn't, Didn't, Don't) Can't, Don't, Couldn't, Didn't (after a verb)

頭緒 touˊ xuˋ

(Clues, Means, Sequence, Systematic, Systematically, Ways) Clues, Ways, Means, Sequence, Systematic, Systematically