Perhaps you should try some spelling variations:
cham luoc » khai luoc, kham cuoc, tham nuoc
cua triet » cua viet, su triet, va triet
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
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: vu sach y ((nang xa) or (nang ma)) hoi. lieu va ((cham luoc) OR (cham soc)) va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (nang ma)) hoi. lieu va ((cham luoc) OR (cham soc)) va hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((nang xa) or (nang ma)) hoi. lieu va ((cham luoc) OR (cham soc)) va hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) or (nang ma)) hoi. lieu va ((cham luoc) OR (cham soc)) va hanh vi cua triet*.