Perhaps you should try some spelling variations:
chat thuc » thuat thuc, nhan thuc, chat thai
hoang van » hang va
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
te sach » toc sach
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
vi cua » vai cua, di cua

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 y ((lang xa) or (hoang van)) hoi. ((hieu ve) OR (hieu va)) chat thuc van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((lang xa) OR (hoang van)) hoi. ((hieu ve) OR (hieu va)) chat thuc van hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((lang xa) or (hoang van)) hoi. ((hieu ve) OR (hieu va)) chat thuc van hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y ((lang xa) or (hoang van)) hoi. ((hieu ve) OR (hieu va)) chat thuc van hanh vi cua tre*.