Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
khach ky » hanh ky, thanh ky
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
va danh » va dinh, va dan, va hanh
su viet » so viet
cam tu » cam thu, nam tu, dam tu
ki su » ky su

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach ky nang xa hoi. hieu van cam tu ((va thanh) or (va danh)) ki su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky nang xa hoi. hieu van cam tu ((va thanh) OR (va danh)) ki su viet.
• Adding a wildcard symbol may retrieve word variants: vu khach ky nang xa hoi. hieu van cam tu ((va thanh) or (va danh)) ki su viet*.