Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
ve triet » va trien
su triet » su viet, su tien
ky tang » ky dang, kho tang, ky trong
nam tuc » nam thuc, nam truc, nam tu
xa hanh » xa thanh, xa khanh, va hanh
hanh ve » hanh vi, hanh va, hanh kem
te sac » te sach, te cac, te san

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