Perhaps you should try some spelling variations:
nguoi san » nguoi tay, nguoi dao, nguoi ma
tay nguoi » toc nguoi, dao nguoi
san hang » san chang, ban hang, van hang
hang dai » hoang dai, hang tai, hang dau
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
su can » su van, su cao, tu can
ve tay » ve tac, ve tai, ve day

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sac) or (su can)) ky nang xa hoi. hieu ve tay nguoi san hang dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sac) OR (su can)) ky nang xa hoi. hieu ve tay nguoi san hang dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su can)) ky nang xa hoi. hieu ve tay nguoi san hang dai cua tre*.