Perhaps you should try some spelling variations:
ban thanh » ban hanh
sach kem » hanh kem
ban hang » ngan hang
su tien » su kien, su hien, tu tieng
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
van su » dan su
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach kem) or (sach y)) nang xa hoi. hieu ve cam tuc ((ban thanh) OR (ban hang)) van su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach kem) OR (sach y)) nang xa hoi. hieu ve cam tuc ((ban thanh) OR (ban hang)) van su tien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach kem) or (sach y)) nang xa hoi. hieu ve cam tuc ((ban thanh) OR (ban hang)) van su tien".
• Adding a wildcard symbol may retrieve word variants: su ((sach kem) or (sach y)) nang xa hoi. hieu ve cam tuc ((ban thanh) OR (ban hang)) van su tien*.