Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh doi » thanh loi, thanh moi, thanh do
van thanh » ban thanh, van tuan
cao thuc » cao thuoc, bao thuc, can thuc
thuc van » thuc vat, thuc dan, thuc va
cua tre » cua te, cuu tre, dua tren
so sach » so sanh, bo sach, co sach
hieu va » lieu va, hieu qua
mang xa » lang xa, mang may, dang xay
sach v » sach va, sach y, sach 2
va cao » va cac, va co, va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach v ((mang xa) or (nang x)) hoi. hieu va cao thuc van thanh doi ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach v ((mang xa) OR (nang x)) hoi. hieu va cao thuc van thanh doi ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: so sach v ((mang xa) or (nang x)) hoi. hieu va cao thuc van thanh doi ((cua tre) or (cua triet))*.