Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam truoc » nam thuoc, lam truoc, nam truc
hanh va » hanh vi
va hanh » van hanh, va thanh, va danh
nam tuc » nam thuc, nam truc, nam tu
ky hang » ky nang, ly hang, ky dang
thi van » thi lan, thi hanh, thi nang
sac ky » cac ky, sai ky
va hoi » xa hoi, va hoc, va hoa
va cua » va chua, via cua, ca cua
te sac » te sach, 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 ky hang va hoi. ((thien van) OR (thi van)) ((nam tuc) or (nam truoc)) va hanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky hang va hoi. ((thien van) OR (thi van)) ((nam tuc) OR (nam truoc)) va hanh va cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky hang va hoi. ((thien van) OR (thi van)) ((nam tuc) or (nam truoc)) va hanh va cua triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky hang va hoi. ((thien van) OR (thi van)) ((nam tuc) or (nam truoc)) va hanh va cua triet*.