Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cau tra » cau ra, cau truc, cau thac
van cau » van dau, van hau, van chat
hang vi » hang va, hanh vi, hang di
tu ban » thu ban, te ban
ca tra » ca tru, va tra
tuc va » thuc va, truc va, tuc xa
ban ky » van ky, dan ky
luc va » duc va, loc va
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky nang x hoi. hieu van cau ((luc va) OR (tuc va)) hang vi ((cau tra) OR (ca tra))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ky nang x hoi. hieu van cau ((luc va) or (tuc va)) hang vi ((cau tra) OR (ca tra))~".
• Adding a wildcard symbol may retrieve word variants: tu ban ky nang x hoi. hieu van cau ((luc va) or (tuc va)) hang vi ((cau tra) OR (ca tra))*.