Perhaps you should try some spelling variations:
tru nang » tra nang, tri nang, truc nano
tu cach » tu cac
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
su cac » tu cac, su cao, su can
nang o » nang co, nang ho, nang ro
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua
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 (su cac)) tru nang o hoi. hieu ve cam xuc va hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su cac)) tru nang o hoi. hieu ve cam xuc va hanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su cac)) tru nang o hoi. hieu ve cam xuc va hanh vi cua vat*.