Perhaps you should try some spelling variations:
hanh thoi » hanh thuoc, nhanh thai, hanh noi
nham thuc » nhan thuc, nam thuc, nham thu
cua viet » ca viet, hoa viet, cua vat
sach thu » sach thue, sach thieu, sach tham
thoi cua » hoi cua, thai cua, troi cua
dang xay » dang van, van xay
hieu ve » hieu va, hieu van
ve nham » ve nha, ve cham
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
lang xa » lang ha, lang van
vu sach » vu bach, su sach, vu khach

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach thu ((lang xa) or (dang xay)) hoi. hieu ve nham thuc va hanh thoi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach thu ((lang xa) OR (dang xay)) hoi. hieu ve nham thuc va hanh thoi cua viet.
• Adding a wildcard symbol may retrieve word variants: vu sach thu ((lang xa) or (dang xay)) hoi. hieu ve nham thuc va hanh thoi cua viet*.