Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
xuc van » duc van, luc van, vuc van
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va
cua tre » cua te, cuu tre, cua triet
cac xuc » cam xuc, cac nuoc, chat xuc
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

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