Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
ban hang » ngan hang
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
vu sach » vu bach, su sach, vu khach
ve cham » va cham, ve chat, vu cham
ty nang » ky nang, ty xang, ty hang
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 sach ty nang x hoi. hieu ((ve cham) or (va cam)) xuc ((van hanh) or (ban hang)) vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty nang x hoi. hieu ((ve cham) OR (va cam)) xuc ((van hanh) OR (ban hang)) vi cua viet.
• Adding a wildcard symbol may retrieve word variants: vu sach ty nang x hoi. hieu ((ve cham) or (va cam)) xuc ((van hanh) or (ban hang)) vi cua viet*.