Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
khach ky » hanh ky, thanh ky
va thanh » gia thanh, ban thanh, le thanh
hieu va » lieu va, hieu qua
va tinh » may tinh
va hanh » van hanh, va danh, ban hanh
su tien » su kien, su hien, tu tieng
va cau » van cau, va cac, va dau
cau tu » dau tu, cau truc
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 x ho. hieu va cau tu ((((va thanh) or (va tinh))) or (va hanh)) ki su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ky nang x ho. hieu va cau tu ((((va thanh) OR (va tinh))) OR (va hanh)) ki su tien.
• Adding a wildcard symbol may retrieve word variants: vu khach ky nang x ho. hieu va cau tu ((((va thanh) or (va tinh))) or (va hanh)) ki su tien*.