Perhaps you should try some spelling variations:
nguoi tay » nguoi thai
tay nguoi » toc nguoi, dao nguoi
tay hanh » day nhanh, day thanh, tang hanh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
su cac » tu cac, su cao, eu cac
su can » su van, su cao, tu can
ve tay » ve tac, ve tai, ve day
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 cac) or (su can)) ky nang xa hoi. hieu ve tay nguoi tay hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (su can)) ky nang xa hoi. hieu ve tay nguoi tay hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su cac) or (su can)) ky nang xa hoi. hieu ve tay nguoi tay hanh di cua tre*.