Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc va
day thuc » dan thuc, cay thuc, dai thuc
te sach » toc sach
danh di » danh du, xanh di, danh dien
sach tu » sach thu, cach tu, sach ty
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
cong ha » cong hoa, dong ha, cong tac
cong xa » cong xay, cong xua, song xa
va day » va dao, va dau, va dap

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