Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
luoc va » nuoc va, duoc va, loc va
va chat » van chat, va phat, cao chat
te sach » toc sach
nang xa » lang xa, nang ma, mang xa
va cham » va tham
vi cua » vai cua, di cua

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

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