Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
qua cham » qua hai, qua cac, va cham
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang
luc ban » cuc ban, luc bat, luc van
duc ban » duc tan, duc van, dua ban
vu sach » vu bach, su sach, vu khach
so sach » so sanh, bo sach, co sach
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: ((so sach) or (vu sach)) ty hang xa hoi. hieu qua cham ((luc ban) OR (duc ban)) thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (vu sach)) ty hang xa hoi. hieu qua cham ((luc ban) OR (duc ban)) thanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (vu sach)) ty hang xa hoi. hieu qua cham ((luc ban) OR (duc ban)) thanh vi cua triet*".