Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
thu sach » thuat sach, thuoc sach, thu hoach
vien dai » hien dai
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
dai xuc » dai xu, dai luoc, dai thuc
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
xuc va » duc va, tuc va, luc va
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: ((tu sach) or (thu sach)) ky nang xa hoi. hieu vien dai xuc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. hieu vien dai xuc va hanh vi cuu tre*.