Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu nong » tu dong, tu cong, tu tong
hang vi » hang va, hanh vi, hang di
cua tre » cua te, cuu tre, cua triet
nong x » nong xa, nang x, nong e
tuc va » thuc va, truc va, duc va
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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 nong x hoi. hieu qua cham ((tuc va) or (tuc xa)) hang vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nong x hoi. hieu qua cham ((tuc va) OR (tuc xa)) hang vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach tu nong x hoi. hieu qua cham ((tuc va) or (tuc xa)) hang vi cua tre*.