Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
cua triet » cua viet, su triet, va triet
van cham » van tham, va cham, van pham
van chat » cao chat
tu sach » thu sach, su sach, te sach
duc gia » quoc gia
van cua » vang cua, ban cua, dan cua
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, ma hoa, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang ((ma hoi) OR (xa hoi)). hieu ((van cham) or (van chat)) duc gia thanh van cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((ma hoi) OR (xa hoi)). hieu ((van cham) OR (van chat)) duc gia thanh van cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((ma hoi) OR (xa hoi)). hieu ((van cham) or (van chat)) duc gia thanh van cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((ma hoi) OR (xa hoi)). hieu ((van cham) or (van chat)) duc gia thanh van cua triet*.