Perhaps you should try some spelling variations:
xa thanh » va thanh, ha thanh, ta thanh
thanh vi » hanh vi, thanh va, thanh ve
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
qua cam » qua cham, qua cac, qua ca
cam tuc » cam xuc, cam tu, nam thuc
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach v nang xa hoi. hieu qua cam tuc xa thanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang xa hoi. hieu qua cam tuc xa thanh vi ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach v nang xa hoi. hieu qua cam tuc xa thanh vi ((cua tre) or (cuu tre))*.