Perhaps you should try some spelling variations:
chat xuc » chat huu, cam xuc, chao xu
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
cac xuc » cam xuc, cac nuoc, cac cuoc
va hanh » van hanh, va thanh, va danh
va dan » ca dan, va dao, va dau
ca cua » co cua
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
ma hoi » mai hoi, xa hoi, ma hoa

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 ky tang ma hoi. hieu qua ((cac xuc) or (chat xuc)) ((va dan) or (va hanh)) ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky tang ma hoi. hieu qua ((cac xuc) OR (chat xuc)) ((va dan) OR (va hanh)) ca cua tre.
• Adding a wildcard symbol may retrieve word variants: tu san ky tang ma hoi. hieu qua ((cac xuc) or (chat xuc)) ((va dan) or (va hanh)) ca cua tre*.