Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
xa thanh » va thanh, ha thanh, ta thanh
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
cac tuc » cac toc, cac tu, cac tac
xa hanh » xa khanh, va hanh, da hanh
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su xac
su cac » tu cac, su cao, su can
va cua » va chua, via cua, ca cua

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 van cac tuc ((xa hanh) OR (xa thanh)) va 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 van cac tuc ((xa hanh) OR (xa thanh)) va cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((su sac) or (su cac)) ky nang xa hoi. hieu van cac tuc ((xa hanh) OR (xa thanh)) va cua tre*.