Perhaps you should try some spelling variations:
cao thuc » cao thuoc, bao thuc, can thuc
hanh vai » hanh vi, hanh tai, hanh voi
hanh van » thanh van, khanh van, hanh san
te sach » toc sach
sach ho » sach hoi, sach ha, sach lo
ho nang » thi nang, kha nang, cao nang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao

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