Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
thuoc va » thuc va, thuoc ma, thuong va
tinh hai » tinh thai, tinh chat, trinh han
dang xay » dang van, van xay
tinh da » tinh va, tinh gia, tinh lao
lang xa » lang ha, lang van
cua tre » cua te, cuu tre, cua triet
va lam » van lam, va lap

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

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