Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cham luc » nhan luc, cham cuu, chat lua
danh dau » hang dau, danh tu, xang dau
te sach » toc sach
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
y tang » ky tang, 6 tang, 7 tang

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 y tang xa hoi. hieu ve ((cham luc) or (cham soc)) va ((danh dau) OR (lanh dao)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y tang xa hoi. hieu ve ((cham luc) OR (cham soc)) va ((danh dau) OR (lanh dao)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y tang xa hoi. hieu ve ((cham luc) or (cham soc)) va ((danh dau) OR (lanh dao)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach y tang xa hoi. hieu ve ((cham luc) or (cham soc)) va ((danh dau) OR (lanh dao)) cua triet*.