Perhaps you should try some spelling variations:
thanh dai » thanh tai, thanh dat, thanh oai
thanh hai » thanh phan, thanh hoa, thanh san
te sach » toc sach
thuc va » thuc vat, thuc dan, thuc day
cuu tre » cua tre, cau tren, cau treo
sach tu » sach thu, cach tu, sach ty
hieu va » lieu va, hieu qua
tu nong » tu dong, tu cong, tu tong
nong x » nong xa, nang x, nong e
x hoi » xa hoi, o hoi, x ho

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 nong x hoi. hieu va cac ((duc va) or (thuc va)) ((thanh dai) OR (thanh hai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nong x hoi. hieu va cac ((duc va) OR (thuc va)) ((thanh dai) OR (thanh hai)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nong x hoi. hieu va cac ((duc va) or (thuc va)) ((thanh dai) OR (thanh hai)) cuu tre*".