Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thue lang » thu hang, thu bang, que lang
thanh de » hanh de, thanh ve, thanh do
thuc ban » thuoc ban, thuc dan, thu ban
cam thuc » am thuc, nam thuc, cam thu
phu lang » phap lang, phu khang, phu luong
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
te sach » toc sach
va cam » va cham, va cac, va cao
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (te sach)) ((thue lang) or (phu lang)) xa hoi. hieu va cam thuc ban thanh de cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) ((thue lang) OR (phu lang)) xa hoi. hieu va cam thuc ban thanh de cua vat.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) ((thue lang) or (phu lang)) xa hoi. hieu va cam thuc ban thanh de cua vat*.