Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
dang xay » dang van, van xay
lang xa » lang ha, lang van
hieu va » lieu va, hieu qua
va nham » va cham, va tham, va nha
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
danh ca » dan ca, doanh cua, danh cho
cua tre » cua te, cuu tre, cua triet
su sac » su sach, su cac, su xac
ca cua » co 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 sac o ((lang xa) or (dang xay)) hoi. hieu va nham thuc va danh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac o ((lang xa) OR (dang xay)) hoi. hieu va nham thuc va danh ca cua tre*.