Perhaps you should try some spelling variations:
nguoi ban » nguoi san, nguoi dan, nguoi ba
tac nguoi » toc nguoi, tay nguoi, thuc nguoi
ban hang » ngan hang
cua tre » cua te, cuu tre, cua triet
hang di » hang doi, hang vi, hang dien
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
di cua » dai cua, doi cua, de cua
su sac » su sach, su xac
su cac » tu cac, su cao, su can

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su cac)) ky nang xa hoi. ((hieu ve) OR (hieu va)) tac nguoi ban hang di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sac) or (su cac)) ky nang xa hoi. ((hieu ve) OR (hieu va)) tac nguoi ban hang di cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su cac)) ky nang xa hoi. ((hieu ve) OR (hieu va)) tac nguoi ban hang di cua tre*.