Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
hieu van » hieu va, thien van, lieu va
te sach » toc sach
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, chat xuc
van cac » van hac, van cau, van bac
ky tang » ky nang, ky dang, kho tang
ky lang » ky nang, ky dang, tay lang
su viet » so viet
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ky lang) or (ky tang)) xa hoi. hieu van cac xuc va hanh vai ((cua triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ky lang) OR (ky tang)) xa hoi. hieu van cac xuc va hanh vai ((cua triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) or (ky tang)) xa hoi. hieu van cac xuc va hanh vai ((cua triet) or (su viet))*.