Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
thanh va » thanh van, hanh va, thanh ha
cao hoi » cau hoi, co hoi, cao hoc
thi van » thi lan, thi hanh, thi nang
nam luc » nhan luc, nam thuc, nam duoc
san ky » sang ky, dan ky, ban ky
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((san ky) or (van ky)) nang cao hoi. thi van ((nam luc) OR (nang luc)) van thanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((san ky) OR (van ky)) nang cao hoi. thi van ((nam luc) OR (nang luc)) van thanh va cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((san ky) or (van ky)) nang cao hoi. thi van ((nam luc) OR (nang luc)) van thanh va cua triet".
• Adding a wildcard symbol may retrieve word variants: te ((san ky) or (van ky)) nang cao hoi. thi van ((nam luc) OR (nang luc)) van thanh va cua triet*.