Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
hanh dai » hanh tai, hanh dao, vanh dai
te sach » toc sach
sach va » sach xa, sach ha, sach dao
va nang » van nang, da nang, cam nang
nang xa » nang x, lang xa, nang ma
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
cua te » cua tu
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach va nang xa hoi. hieu qua cham ((luc va) or (tuc va)) hanh dai ((cua te) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach va nang xa hoi. hieu qua cham ((luc va) OR (tuc va)) hanh dai ((cua te) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: te sach va nang xa hoi. hieu qua cham ((luc va) or (tuc va)) hanh dai ((cua te) or (cua su))*.