Perhaps you should try some spelling variations:
cao thuc » cao thuoc, bao thuc, can thuc
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi
cau tre » cau tren, cau treo, cau tra
va cao » va cac, va co, va dao
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu ((nang xa) OR (nang x)) hoi. hieu va cao thuc va hanh va cau tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu ((nang xa) OR (nang x)) hoi. hieu va cao thuc va hanh va cau tre".
• Adding a wildcard symbol may retrieve word variants: te sach tu ((nang xa) OR (nang x)) hoi. hieu va cao thuc va hanh va cau tre*.