Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
van hanh » van thanh, ban hanh, van anh
vien cac » vien bach, vien dai, vien da
xuc van » duc van, luc van, vuc van
tu sach » thu sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
su sach » so sach, vu sach
cac xuc » cam xuc, cac nuoc, chat xuc
den su » dan su
nen su » nien su

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 (su sach)) ky nang xa hoi. hieu vien cac xuc van hanh ((den su) OR (nen su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. hieu vien cac xuc van hanh ((den su) OR (nen su)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang xa hoi. hieu vien cac xuc van hanh ((den su) OR (nen su)) triet*".