Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vai » thanh hai, thanh van, thanh tai
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
te sang » te bang, te hang, te san
sang ky » sang kyo, dang ky, tang ky
cao hoi » cau hoi, cao hoc, tao hoi
thi van » thi lan, thi hanh, thi nang
nam luc » nang luc, nhan luc, nam duoc
vai cua » dai cua, hai cua, lai cua
co hoi » co hoc, co loi

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

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