Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
hoat xuc » hoa xuc, chat xuc, hoa xua
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
su can » su van, su cao, tu can
can ky » van ky, dan ky, ban ky
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
qua » quan

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: su can ky nang ((ma hoi) OR (xa hoi)). hieu qua hoat xuc va thanh dai ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su can ky nang ((ma hoi) or (xa hoi)). hieu qua hoat xuc va thanh dai ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: su can ky nang ((ma hoi) or (xa hoi)). hieu qua hoat xuc va thanh dai ((cua tre) OR (cuu tre))*.