Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
vi cua » vai cua, di cua
cua cu » cua chu, cua cau, cua su

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