Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
thuc van » thuc vat, thuc dan, thuc va
dang xay » dang van, van xay
te sach » toc sach
tuc van » truc van, tuc va, duc van
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

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 ((nang xa) or (dang xay)) hoi. hieu va chat ((tuc van) or (thuc van)) hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang xa) OR (dang xay)) hoi. hieu va chat ((tuc van) OR (thuc van)) hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang xa) or (dang xay)) hoi. hieu va chat ((tuc van) or (thuc van)) hanh dai cua tre*.