Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh van » thanh san, thanh toan, thanh phan
nam thuc » nam thuoc, am thuc, nam tu
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, mang xa
van cua » vang cua, ban cua, dan cua
nang ma » tang ma, sang ma, nang cao
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky ((nang xa) or (nang ma)) hoi. hieu va ((nam thuc) or (nam thu)) ban thanh van cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky ((nang xa) OR (nang ma)) hoi. hieu va ((nam thuc) OR (nam thu)) ban thanh van cua te.
• Adding a wildcard symbol may retrieve word variants: vu sac ky ((nang xa) or (nang ma)) hoi. hieu va ((nam thuc) or (nam thu)) ban thanh van cua te*.