Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
vaia cua » vai cua, via cua, dai cua
anh vaia » anh bai, anh van, anh bia
hoc anh » hoc nganh, hoc nhanh, ngoc anh
van anh » van thanh, tuan anh, van minh
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
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) or (nang ma)) hoi. ((hieu qua) or (hieu quan)) cam duc van anh vaia cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc anh va ((nang xa) OR (nang ma)) hoi. ((hieu qua) OR (hieu quan)) cam duc van anh vaia cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc anh va ((nang xa) or (nang ma)) hoi. ((hieu qua) or (hieu quan)) cam duc van anh vaia cua tre*.