Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
mai khoi » mai khoa, tai khoa, cac khoi
minh vai » minh va, minh hai, minh ai
vien dai » hien dai
cau tren » cu tren, dau tren, ca tren
ly vang » ly hang, ly van, ly quang
dai xuc » dai xu, dai luoc, dai thuc
xuc van » duc van, luc van, vuc van
ly nang » ky nang, ly hang, ly quang
cuu tre » cua tre, cau treo
te sach » toc sach

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