Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
hanh vaia » hanh vi, hanh va, hanh tai
vaia cua » vai cua, via cua, dai cua
hoc anh » hoc nganh, hoc nhanh, ngoc anh
va nang » van nang, da nang, cam nang
nang xa » nang x, lang xa, nang ma
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
anh va » hanh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc anh va nang xa hoi. ((hieu qua) or (hieu quan)) cam duc va hanh vaia cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc anh va nang xa hoi. ((hieu qua) OR (hieu quan)) cam duc va hanh vaia cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc anh va nang xa hoi. ((hieu qua) or (hieu quan)) cam duc va hanh vaia cua tre*.