Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thien van » thi van
thanh vi » hanh vi, thanh va, thanh ve
luoc van » luoc can, luoc va, luot van
nang co » nang cao, nang doc, nang noi
te sach » toc sach
luc van » luu van, duc van, luc va
co hoi » co hoc, co loi
vi cua » vai cua, di cua
te sac » te cac, te san

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

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