Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hang » ngan hang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
hang vi » hang va, hanh vi, hang di
nang o » nang co, nang ho, nang ro
vi cua » vai cua, di cua
o hoi » co hoi, o hoc, o hai

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