Perhaps you should try some spelling variations:
tu cach » tu cac
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
va cao » va cac, va co, va dao
vi cua » vai cua, di cua
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hoi » co hoi, o hoc, o hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (tu sach)) ky nang o hoi. hieu ((ve cam) or (va cao)) xuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (tu sach)) ky nang o hoi. hieu ((ve cam) OR (va cao)) xuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (tu sach)) ky nang o hoi. hieu ((ve cam) or (va cao)) xuc va hanh vi cua te*.