Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
sach thi » sach thu, sach tai, sach thieu
vien cac » vien bach, vien dai, vien da
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de cua
cua su » qua 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 thi ((nang xa) or (lang xa)) hoi. hieu vien cac xuc van hanh di cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi ((nang xa) OR (lang xa)) hoi. hieu vien cac xuc van hanh di cua su.
• Adding a wildcard symbol may retrieve word variants: te sach thi ((nang xa) or (lang xa)) hoi. hieu vien cac xuc van hanh di cua su*.