Perhaps you should try some spelling variations:
thien van » thi van
hieu van » hieu va, lieu va
nam thuc » nam thuoc, am thuc, nam thu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va
thuc xa » thuc xay, tuc xa, thuc va
xa hanh » xa thanh, xa khanh, va hanh
hanh va » hang va, hanh vi
huu tre » huu tri, cuu tre, huu them
va huu » vu huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc cao ky nang xa hoi. ((hieu ve) or (((hieu van) or (thien van)))) nam thuc xa hanh va huu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc cao ky nang xa hoi. ((hieu ve) OR (((hieu van) OR (thien van)))) nam thuc xa hanh va huu tre.
• Adding a wildcard symbol may retrieve word variants: hoc cao ky nang xa hoi. ((hieu ve) or (((hieu van) or (thien van)))) nam thuc xa hanh va huu tre*.