Perhaps you should try some spelling variations:
cao thuc » cao thuoc, bao thuc, can thuc
thuc day » thuc dan, thuc vat
hanh vai » hanh va, hanh tai, hanh van
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
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 tu nang xa hoi. hieu va cao thuc day ((hanh vai) OR (hanh vi)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. hieu va cao thuc day ((hanh vai) OR (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. hieu va cao thuc day ((hanh vai) OR (hanh vi)) cua tre*.