Perhaps you should try some spelling variations:
dat thanh » dao thanh, dat khanh, dang thanh
cam thuc » am thuc, nam thuc, cam thu
ban hang » ngan hang
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ve cam » ve cham, ve cac, va cam
di cua » dai cua, doi cua, de cua

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 v nang xa hoi. hieu ve cam thuc ((dat thanh) or (ban hang)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v nang xa hoi. hieu ve cam thuc ((dat thanh) OR (ban hang)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach v nang xa hoi. hieu ve cam thuc ((dat thanh) or (ban hang)) di cua tre*.