Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh di » danh du, xanh di, danh dien
danh vi » hanh vi, dinh vi, danh va
te sach » toc sach
qua cac » cua cac
x quang » xa quang, _ quang, le quang
cac luc » cau luc, coc luc, cac nuoc
luc va » duc va, tuc va, loc va

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 ((x quang) or (vu quang)) xa hoi. hieu qua cac luc va ((danh vi) OR (danh di)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((x quang) OR (vu quang)) xa hoi. hieu qua cac luc va ((danh vi) OR (danh di)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((x quang) or (vu quang)) xa hoi. hieu qua cac luc va ((danh vi) OR (danh di)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((x quang) or (vu quang)) xa hoi. hieu qua cac luc va ((danh vi) OR (danh di)) cua triet*.