Perhaps you should try some spelling variations:
thanh vu » thanh va, thanh ve, thanh tu
va thanh » gia thanh, ban thanh, va tinh
lam thuc » lam thuoc, am thuc, nam thuc
lang van » tang van, hoang van, giang van
dang van » hoang van, hang va
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
thuc va » thuc vat, thuc dan, thuc day
van lam » van nam
sach lo » sach dao, sach doi, sach hoi
lang xa » lang ha, dang xay
vu va » vu van, tu va, su va
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 sach lo ((lang xa) or (((lang van) OR (dang van)))) hoi. hieu van lam thuc va thanh vu va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach lo ((lang xa) OR (((lang van) OR (dang van)))) hoi. hieu van lam thuc va thanh vu va thiet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach lo ((lang xa) or (((lang van) OR (dang van)))) hoi. hieu van lam thuc va thanh vu va thiet*".