Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
va hang » van hang, va lang, va hanh
va nang » van nang, da nang, cam nang
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te san
te cac » tu cac, ve cac, te cao
ve cau » ke cau, va cau, ve cac

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

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