Perhaps you should try some spelling variations:
den nang » dun nang, dung nang, da nang
hanh vei » hanh vi, hanh ve, hanh voi
hoc anh » hoc nganh, hoc nhanh, ngoc anh
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cua tre » cuu tre, cua triet, dua tren
anh den » danh dien, anh dong, anh dung
cua te » cua tu
luc va » duc va, tuc va, loc va
xac va » tac va, ac va, bac va
va cam » va cham, va cac, va cao

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 den nang xa hoi. hieu va cam ((xac va) or (luc va)) hanh vei ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc anh den nang xa hoi. hieu va cam ((xac va) OR (luc va)) hanh vei ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: hoc anh den nang xa hoi. hieu va cam ((xac va) or (luc va)) hanh vei ((cua tre) or (cua te))*.