Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cau tren » cu tren, dau tren, ca tren
thi hanh » thi thanh
sach dai » sach dao, sach bai, sach dat
dai nang » da nang, dai dang, dai thang
thi van » thi lan, thi nang
nang xa » nang x, lang xa, nang ma
cau luc » cau truc, cau phuc
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
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: su sach dai nang xa hoi. ((thi van) OR (thi hanh)) cau luc va hanh vi ((cua triet) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach dai nang xa hoi. ((thi van) OR (thi hanh)) cau luc va hanh vi ((cua triet) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach dai nang xa hoi. ((thi van) OR (thi hanh)) cau luc va hanh vi ((cua triet) or (cau tren))".
• Adding a wildcard symbol may retrieve word variants: su sach dai nang xa hoi. ((thi van) OR (thi hanh)) cau luc va hanh vi ((cua triet) or (cau tren))*.