Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cua triet » su triet, va triet
va doanh » van doanh, vay doanh, va danh
cua viet » ca viet, hoa viet, cua vat
thu xac » thau xay
hieu va » lieu va, hieu qua
xac ky » cac ky, sac ky, bac ky
nang o » nang co, nang ho, nang ro
cac lo » cac lop, cac co, cac bo
o hoi » co hoi, o hoc, o hai
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu xac ky nang o hoi. hieu va cac lo va doanh van ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu xac ky nang o hoi. hieu va cac lo va doanh van ((cua triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: thu xac ky nang o hoi. hieu va cac lo va doanh van ((cua triet) or (cua viet))*.