Perhaps you should try some spelling variations:
cham dua » chay dua, cham giua, pham duc
ban hang » ngan hang
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
dua ban » dia ban, cua ban, qua ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
cai ky » cao ky, cac ky, cam ky
me hoi » le hoi
tu cai » tu cac, tu can, tu bai

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

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