Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
ve triet » va trien, su triet
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
va hanh » van hanh, va thanh, va danh
hanh ve » hanh vi, hanh va, hanh kem
te sac » te sach, te cac, te san
nam tu » nam thu, nam thuc
ve ve » de ve, va ve, ke ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ((ky lang) OR (ky tang)) xa hoi. ((hieu van) or (lieu va)) nam tu va hanh ve ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ((ky lang) OR (ky tang)) xa hoi. ((hieu van) OR (lieu va)) nam tu va hanh ve ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ((ky lang) OR (ky tang)) xa hoi. ((hieu van) or (lieu va)) nam tu va hanh ve ve triet".
• Adding a wildcard symbol may retrieve word variants: te sac ((ky lang) OR (ky tang)) xa hoi. ((hieu van) or (lieu va)) nam tu va hanh ve ve triet*.