Perhaps you should try some spelling variations:
ban than » ban thanh, van thanh, ban hang
nang ma » tang ma, sang ma, nang cao
vu cham » vu kham, tu cham, qua cham
va cham » va chat, va tham
ve chat » va chat, van chat
than va » thanh va, nhan va, toan va
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
va ban » van ban, va bai, va bao
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang ma hoi. hieu ((((vu cham) or (va cham))) or (ve chat)) duc va ban than va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang ma hoi. hieu ((((vu cham) OR (va cham))) OR (ve chat)) duc va ban than va thiet.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang ma hoi. hieu ((((vu cham) or (va cham))) or (ve chat)) duc va ban than va thiet*.