Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
cao thuoc » cay thuoc, cua thuoc, nam thuoc
thuoc va » thuc va, thuoc ma, thuong va
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
cau tre » cau tren, cau treo, cau tra
nang xa » lang xa, nang ma, mang xa
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 ((cach tu) OR (cach thuc)) ((nang xa) or (nang x)) hoi. hieu va cao thuoc va hanh va cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((cach tu) OR (cach thuc)) ((nang xa) OR (nang x)) hoi. hieu va cao thuoc va hanh va cau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((cach tu) OR (cach thuc)) ((nang xa) or (nang x)) hoi. hieu va cao thuoc va hanh va cau tre".
• Adding a wildcard symbol may retrieve word variants: te ((cach tu) OR (cach thuc)) ((nang xa) or (nang x)) hoi. hieu va cao thuoc va hanh va cau tre*.