Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
van hanh » van thanh, ban hanh, van ban
dang xay » dang van, van xay
cuu tre » cua tre, cau tren, cau treo
hai cuu » hai cua, hai chu, hai cuc
hieu le » hieu ve, hieu he, hieu ly
van anh » van thanh, tuan anh, van minh
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
le nam » ly nam, he nam, le na

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 ((nang x) or (dang xay)) hoi. hieu le nam thuoc ((van hanh) OR (van anh)) hai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky ((nang x) OR (dang xay)) hoi. hieu le nam thuoc ((van hanh) OR (van anh)) hai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky ((nang x) or (dang xay)) hoi. hieu le nam thuoc ((van hanh) OR (van anh)) hai cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu san ky ((nang x) or (dang xay)) hoi. hieu le nam thuoc ((van hanh) OR (van anh)) hai cuu tre*.