Perhaps you should try some spelling variations:
ban hang » ngan hang
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
qua cac » cua cac
cac duc » cac du, cao duc, cac dac
duc ban » duc tan, duc van, dua ban
bai cua » ban cua, dai cua, bai ca
hai cua » thai cua, dai cua, hoi cua
x hoi » xa hoi, o hoi, x ho

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 ty nang x hoi. hieu qua cac duc ban hang ((bai cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang x hoi. hieu qua cac duc ban hang ((bai cua) OR (hai cua)) tre*.