Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
dung tren » dung trong, dung trung
cau treo » cau theo, cau tren, cau triet
hanh dai » hanh tai, hanh dao, vanh dai
van hanh » van thanh, ban hanh, van anh
vien cac » vien bach, vien dai, vien da
lang xa » lang ha, dang xay, lang van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, xuc ban
ky lang » ky nang, ky dang, ky tang
te sach » toc sach
tu sach » thu sach, su sach, tu cach

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) ky lang xa hoi. hieu vien cac xuc van hanh dai ((dung tren) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky lang xa hoi. hieu vien cac xuc van hanh dai ((dung tren) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky lang xa hoi. hieu vien cac xuc van hanh dai ((dung tren) or (cau treo))*.