Perhaps you should try some spelling variations:
ban thanh » ban hanh
sach cam » sach cap, mach cam, sach tham
cham xuc » chat xuc, cham soc, pham duc
ban hang » ngan hang
dau tren » dau tien, dat tren, dau tieng
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
da dau » dan dau, dat dau, va dau

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 cam nang xa hoi. hieu ve ((cham xuc) or (cam xuc)) ((ban thanh) OR (ban hang)) da dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach cam nang xa hoi. hieu ve ((cham xuc) OR (cam xuc)) ((ban thanh) OR (ban hang)) da dau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach cam nang xa hoi. hieu ve ((cham xuc) or (cam xuc)) ((ban thanh) OR (ban hang)) da dau tren".
• Adding a wildcard symbol may retrieve word variants: tu sach cam nang xa hoi. hieu ve ((cham xuc) or (cam xuc)) ((ban thanh) OR (ban hang)) da dau tren*.