Perhaps you should try some spelling variations:
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cai ky nang xa hoi. hieu ve cham ((luc va) or (tuc xa)) hanh va ((hoa viet) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky nang xa hoi. hieu ve cham ((luc va) OR (tuc xa)) hanh va ((hoa viet) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: tu cai ky nang xa hoi. hieu ve cham ((luc va) or (tuc xa)) hanh va ((hoa viet) or (cua tre))*.