Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
cau theo » cau thi, cau tao
minh vai » minh va, minh hai, minh ai
cau treo » cau tren, cau triet, cau trieu
nang mai » nang ma, nang tai, lang mai
vien dai » hien dai
cuu tre » cua tre, cau tren
te sach » toc sach
sach ly » sach y, sach lo, sach ty
dai xuc » dai xu, dai luoc, dai thuc
mai hoi » mai khoi, dai hoi, lai hoi
ly nang » ky nang, ly hang, ly vang
xuc van » duc van, luc van, vuc van

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 ly nang mai hoi. hieu vien dai xuc van minh vai ((cuu tre) or (((cau treo) OR (cau theo))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang mai hoi. hieu vien dai xuc van minh vai ((cuu tre) OR (((cau treo) OR (cau theo)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang mai hoi. hieu vien dai xuc van minh vai ((cuu tre) or (((cau treo) OR (cau theo))))".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang mai hoi. hieu vien dai xuc van minh vai ((cuu tre) or (((cau treo) OR (cau theo))))*.