Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
thuc day » thuc dan, thuc vat
thuc dat » thuc vat, thuc dan, thue dat
te sach » toc sach
nang xa » nang x, lang xa, nang ma
so sach » so sanh, bo sach, co sach
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu

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) or (so sach)) ky nang xa hoi. hieu van nam ((thuc dat) or (thuc day)) thanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (so sach)) ky nang xa hoi. hieu van nam ((thuc dat) OR (thuc day)) thanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (so sach)) ky nang xa hoi. hieu van nam ((thuc dat) or (thuc day)) thanh vi cuu tre*.