Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
cham dua » chay dua, cham giua, pham duc
hang vai » hang va, hang tai, hang hai
ban hang » ngan hang
mai hoi » mai khoi, dai hoi, lai hoi
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
dua ban » dia ban, cua ban, qua ban
vai cua » dai cua, hai cua, lai cua
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang ((((me hoi) or (le hoi))) or (mai hoi)). hieu ve cham dua ban hang vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ((((me hoi) OR (le hoi))) OR (mai hoi)). hieu ve cham dua ban hang vai cua viet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ((((me hoi) or (le hoi))) or (mai hoi)). hieu ve cham dua ban hang vai cua viet*.