Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
cau treo » cau theo, cau tren, cau triet
van dinh » van minh, van dich, xuan dinh
vien cac » vien bach, vien dai, vien da
cuu tre » cua tre, cau tren
te sach » toc sach
sach ty » sach y, sach tu, sach thu
cac duc » cac du, cao duc, cac dac
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
va dinh » va kinh, va tinh, vu dinh

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 ty nang xa hoi. hieu vien cac duc ((va dinh) OR (van dinh)) viet ((cuu tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu vien cac duc ((va dinh) OR (van dinh)) viet ((cuu tre) OR (cau treo))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu vien cac duc ((va dinh) OR (van dinh)) viet ((cuu tre) or (cau treo))*".