Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
thanh di » thanh doi, thanh de, thanh do
sach thu » sach thue, sach thieu, sach tham
thuc ban » thuoc ban, thuc dan, thu ban
nam thuc » nam thuoc, am thuc, nam thu
xach tay » canh tay
cua cay » cua cac
hieu ve » hieu va
nang xa » nang x, lang xa, nang ma
di cua » dai cua, doi cua, de cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((xach tay) OR (sach thu)) nang xa hoi. ((hieu ve) OR (hieu van)) nam thuc ban thanh di cua cay~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((xach tay) or (sach thu)) nang xa hoi. ((hieu ve) OR (hieu van)) nam thuc ban thanh di cua cay~".
• Adding a wildcard symbol may retrieve word variants: vu ((xach tay) or (sach thu)) nang xa hoi. ((hieu ve) OR (hieu van)) nam thuc ban thanh di cua cay*.