Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam duoc » nam thuoc, da duoc, dat duoc
ban hang » ngan hang
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
lam duc » lam duoc, pham duc, lam dung
dan cua » dan ca, dai cua, day cua
ban cua » ban quan

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 ky nang xa hoi. hieu van ((lam duc) or (nam duoc)) ban hang ((dan cua) or (ban cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu van ((lam duc) OR (nam duoc)) ban hang ((dan cua) OR (ban cua)) tre.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu van ((lam duc) or (nam duoc)) ban hang ((dan cua) or (ban cua)) tre*.