Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
hieu vien » hieu hien, hieu viec, thieu nien
vien dai » hien dai
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
nang xa » nang x, lang xa, nang ma
dai vuc » dai luoc, dai thuc, dai truc
vuc van » duc van, luc van, thuc van
cua cau » cua cac, cua cay, cua can
cua chu » sua chua

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 thieu nang xa hoi. hieu vien dai vuc van hanh vai ((cua cau) or (cua chu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thieu nang xa hoi. hieu vien dai vuc van hanh vai ((cua cau) OR (cua chu)).
• Adding a wildcard symbol may retrieve word variants: te sach thieu nang xa hoi. hieu vien dai vuc van hanh vai ((cua cau) or (cua chu))*.