Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu quan » hieu qua, lieu quan, thien quan
quan cau » quang cao, toan cau, quan ha
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
cau luc » cau truc, cau phuc
va hang » van hang, va nang, va lang
hang de » hoang de, hanh de, hang di
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
de cua » le cua, te cua, dieu cua

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 ((xa hoi) OR (mai hoi)). hieu quan cau luc va hang de cua triet~.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((xa hoi) or (mai hoi)). hieu quan cau luc va hang de cua triet*.