Perhaps you should try some spelling variations:
cay thuoc » cua thuoc, nam thuoc, va thuoc
ban hanh » ban hang
nam duoc » nam thuoc, da duoc, dat duoc
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
cao duc » dao duc, cao suc, giao duc
hanh va » hang va, hanh vi
ang xa » lang xa, mang xa, dang xay
va cay » va cac, va cao, va cai

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 ty) or (sach thieu)) ang xa hoi. hieu va ((nam duoc) or (cao duc)) ban hanh va cay thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thieu)) ang xa hoi. hieu va ((nam duoc) OR (cao duc)) ban hanh va cay thuoc.
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach thieu)) ang xa hoi. hieu va ((nam duoc) or (cao duc)) ban hanh va cay thuoc*.