Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
sach thi » sach thu, sach tai, sach thieu
van hanh » van thanh, ban hanh, van anh
hanh di » hanh vi, hanh de, hang di
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
te sach » toc sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
cua cau » cua cac, cua chu, cua cay
cua cu » cua chu, cua su, cua co

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 cu) OR (cua cau))~.
• 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 cu) OR (cua cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thi ((nang xa) or (lang xa)) hoi. hieu vien cac xuc van hanh di ((cua cu) OR (cua cau))".
• 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 cu) OR (cua cau))*.