Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
thuc day » thuc dan, thuc vat
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
thuc va » thuc vat, thuc dan
cua tre » cua te, cuu tre, cua triet
sach tu » sach thu, cach tu, sach ty
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
va cao » va cac, va dao, va bao
va co » vo co

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) OR (va co)) ((thuc va) or (thuc day)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nang xa hoi. hieu ((va cao) OR (va co)) ((thuc va) OR (thuc day)) hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. hieu ((va cao) OR (va co)) ((thuc va) or (thuc day)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. hieu ((va cao) OR (va co)) ((thuc va) or (thuc day)) hanh vai cua tre*.