Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hang » ngan hang
hieu va » lieu va, hieu qua
hang vi » hang va, hanh vi, hang di
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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: tu sac ky nang x hoi. hieu va ((nhan luc) OR (nang luc)) ban hang vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang x hoi. hieu va ((nhan luc) or (nang luc)) ban hang vi cua triet*.