Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
lieu van » lieu va, hieu van, sieu van
thuoc va » thuc va, thuoc ma, thuong va
dang xay » dang van, van xay
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
van lam » van nam
cuu tre » cau tren, cau treo
lang xa » lang ha, lang van
san ky » sang ky, van ky, dan ky
tu san » thu san, tu ban, tu can

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky ((lang xa) or (dang xay)) hoi. lieu van lam thuoc va hanh vi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((lang xa) OR (dang xay)) hoi. lieu van lam thuoc va hanh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky ((lang xa) or (dang xay)) hoi. lieu van lam thuoc va hanh vi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu san ky ((lang xa) or (dang xay)) hoi. lieu van lam thuoc va hanh vi ((cua tre) OR (cuu tre))*.