Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
va thanh » gia thanh, ban thanh, va tinh
nam thuc » nam thuoc, am thuc, nam thu
vu sach » vu bach, su sach, vu khach
thuc va » thuc vat, thuc dan, thuc day
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
ve nam » he nam, va nam, le nam
cua cu » cua chu, cua cau, cua co
cua su » qua su

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 sach ty ((nang xa) OR (nang ma)) hoi. hieu ve nam thuc va thanh di ((cua cu) OR (cua su))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ty ((nang xa) OR (nang ma)) hoi. hieu ve nam thuc va thanh di ((cua cu) or (cua su))~".
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((nang xa) OR (nang ma)) hoi. hieu ve nam thuc va thanh di ((cua cu) or (cua su))*.