Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa
tu ban » thu ban, te ban
tu san » thu san, tu can, vu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) or (tu ban)) ky nang ma hoi. hieu va cac tuc va hanh vai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu ban)) ky nang ma hoi. hieu va cac tuc va hanh vai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu ban)) ky nang ma hoi. hieu va cac tuc va hanh vai ((cua tre) or (cuu tre))*.