to nedává ani hlavu ani patu znamená v angličtina

make head or tail of▼(understand even minimally)
verb
[UK: ˈmeɪk hed ɔː(r) teɪl əv ˈsʌm.θɪŋ] [US: ˈmeɪk ˈhed ɔːr ˈteɪl əv ˈsʌm.θɪŋ]