Perhaps you should try some spelling variations:
da thanh » dao thanh, dat thanh, dam thanh
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu va » lieu va, hieu qua
hac tac » cac tac, hoc tach, thac cac
da hanh » dao hanh, dan hanh, dna hanh
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su xac
su cac » tu cac, su cao, su can
va hac » van hac, va khac, va cac

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 sac) OR (su cac)) ky tang xa hoi. hieu va hac tac ((da hanh) OR (da thanh)) dai cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su cac)) ky tang xa hoi. hieu va hac tac ((da hanh) or (da thanh)) dai cua tre*.