Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » thanh va, thanh ve, nhanh vi
nang co » nang cao, nang doc, nang noi
thi van » thi lan, thi hanh, thi nang
nam luc » nang luc, nhan luc, nam thuc
luc van » luoc van, luu van, duc van
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
co hoi » co hoc, co loi

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