Perhaps you should try some spelling variations:
thanh lai » thanh hai, thanh lap, thanh loi
ban thanh » ban hanh, ban hang
sach thu » sach thue, sach thieu, sach tham
thu hang » thi hang, thuc hanh, thu huong
cam thuc » am thuc, nam thuc, cam thu
thuc ban » thuoc ban, thuc dan, thu ban
dua tren » dung tren
cau treo » cau theo, cau tren, cau triet
tu sach » thu sach, su sach, te sach
hang xa » hoang xa, hang va, hang ca
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thu hang xa hoi. hieu ve cam thuc ban thanh lai ((dua tren) OR (cau treo))~.
• Adding a wildcard symbol may retrieve word variants: tu sach thu hang xa hoi. hieu ve cam thuc ban thanh lai ((dua tren) or (cau treo))*.