Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thien van » thi van
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
nam thuc » nam thuoc, am thuc, nam thu
nam duc » nam duoc, pham duc, nam buoc
nang co » nang cao, nang doc, nang noi
sac ky » sai ky
co loi » co hoi
vi cua » vai cua, di cua

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: te ((sac ky) OR (cac ky)) nang co loi. thien van ((nam duc) OR (nam thuc)) van thanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sac ky) OR (cac ky)) nang co loi. thien van ((nam duc) or (nam thuc)) van thanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: te ((sac ky) OR (cac ky)) nang co loi. thien van ((nam duc) or (nam thuc)) van thanh vi cua triet*.