Perhaps you should try some spelling variations:
thanh loc » thanh loi, thanh long, thanh loan
thanh hoc » thanh hoa, than hoc, thanh ho
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
sang ma » tang ma, nang ma, sang tao
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
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: thu sach y ((sang ma) or (dung tai)) hoi. lieu va ((thanh loc) OR (thanh hoc)) va danh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((sang ma) OR (dung tai)) hoi. lieu va ((thanh loc) OR (thanh hoc)) va danh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y ((sang ma) or (dung tai)) hoi. lieu va ((thanh loc) OR (thanh hoc)) va danh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach y ((sang ma) or (dung tai)) hoi. lieu va ((thanh loc) OR (thanh hoc)) va danh vi cua triet*.