Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
te sach » toc sach
hang di » hang doi, hang dien, hang dich
hang vi » hang va, hanh vi, khang voi
cua tre » cua te, cuu tre, cua triet
sach tu » sach thu, cach tu, sach ty
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
tuc va » thuc va, truc va, duc va

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 tu nang xa hoi. hieu qua cham ((tuc va) OR (tuc xa)) ((hang vi) or (hang di)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang xa hoi. hieu qua cham ((tuc va) OR (tuc xa)) ((hang vi) OR (hang di)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. hieu qua cham ((tuc va) OR (tuc xa)) ((hang vi) or (hang di)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. hieu qua cham ((tuc va) OR (tuc xa)) ((hang vi) or (hang di)) cua tre*.