Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
hanh tai » thanh tai, hang tai, han tai
hanh lai » hanh lam, thanh lap, thanh loi
nhan luc » nang luc
lang xa » lang ha, dang xay, lang van
hieu vu » hieu va, hieu ve, hieu su
vu nhan » cu nhan, vu ngan, tu nhan
nang ma » tang ma, sang ma, nang cao
su sach » so sach, vu sach
luc va » duc va, tuc va, loc va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((nang ma) OR (lang xa)) hoi. hieu vu nhan luc va ((hanh lai) OR (hanh tai)) chau triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang ma) or (lang xa)) hoi. hieu vu nhan luc va ((hanh lai) OR (hanh tai)) chau triet~".
• Adding a wildcard symbol may retrieve word variants: su sach y ((nang ma) or (lang xa)) hoi. hieu vu nhan luc va ((hanh lai) OR (hanh tai)) chau triet*.