Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
khach ty » sach ty
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
cua viet » ca viet, hoa viet, cua vat
ty nang » ky nang, ty xang, ty hang
ve cham » va cham, ve chat, vu cham
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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 ty nang x hoi. hieu ((ve cham) or (va cam)) xuc ((van hanh) or (ban hanh)) vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ty nang x hoi. hieu ((ve cham) OR (va cam)) xuc ((van hanh) OR (ban hanh)) vi cua viet.
• Adding a wildcard symbol may retrieve word variants: vu khach ty nang x hoi. hieu ((ve cham) or (va cam)) xuc ((van hanh) or (ban hanh)) vi cua viet*.