Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cam thuc » am thuc, nam thuc, cam thu
thuc van » thuc vat, thuc dan, thuc va
thanh di » thanh doi, thanh de, thanh do
te sach » toc sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
cua tre » cuu tre, cua triet, dua tren
va cam » va cham, va cac, va cao
cua tu » cua tuc, cua su, cua cu

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 ty xang xa hoi. hieu va cam thuc van thanh di ((cua tre) or (((cua te) or (cua tu))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty xang xa hoi. hieu va cam thuc van thanh di ((cua tre) OR (((cua te) OR (cua tu)))).
• Adding a wildcard symbol may retrieve word variants: te sach ty xang xa hoi. hieu va cam thuc van thanh di ((cua tre) or (((cua te) or (cua tu))))*.