Perhaps you should try some spelling variations:
nam thuc » nam thuoc, nam thu, nam tu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang xa hoi. hieu ve ((nam thuc) or (am thuc)) va danh vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang xa hoi. hieu ve ((nam thuc) OR (am thuc)) va danh vi ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: vu sac ky nang xa hoi. hieu ve ((nam thuc) or (am thuc)) va danh vi ((cua te) or (cua tu))*.