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

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 ((danh vai) OR (danh sai)) ((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 ((danh vai) OR (danh sai)) ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu xac ky nang o hoi. hieu va cac lo va ((danh vai) OR (danh sai)) ((cua triet) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: thu xac ky nang o hoi. hieu va cac lo va ((danh vai) OR (danh sai)) ((cua triet) or (cua viet))*.