Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
chat xuc » chat huu, cam xuc, chao xu
qua chat » qua nhat, qua cham, luan chat
lang van » dang van, tang van, hoang van
sach thu » sach thue, sach thieu, sach tham
so sach » so sanh, bo sach, co sach
xuc van » duc van, luc van, vuc van
lang ha » long ha
nang xa » nang x, lang xa, nang ma
ca tren » cau tren, cu tren, la tren
vi ca » vit ca, li ca, va ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thu ((nang xa) or (((lang ha) or (lang van)))) hoi. hieu qua chat xuc van thanh vi ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu ((nang xa) OR (((lang ha) OR (lang van)))) hoi. hieu qua chat xuc van thanh vi ca tren.
• Adding a wildcard symbol may retrieve word variants: so sach thu ((nang xa) or (((lang ha) or (lang van)))) hoi. hieu qua chat xuc van thanh vi ca tren*.