Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
mang xa » lang xa, mang may, dang xay
nay lua » cay lua, vay luan, nam luat
so sach » so sanh, bo sach, hoc sach
ty mang » ty xang, ty hang, tin mang
co sach » bo sach, cuon sach, hoc sach
nay luc » nang luc, nhan luc
va dan » ca dan, va dao, va dau
dan va » doan va, dan ca, ban va
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (co sach)) ty mang xa hoi. lieu va ((nay luc) OR (nay lua)) va dan va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) ty mang xa hoi. lieu va ((nay luc) OR (nay lua)) va dan va cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (co sach)) ty mang xa hoi. lieu va ((nay luc) OR (nay lua)) va dan va cua triet*".