Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh lap » thanh san, phan lap, thanh hai
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
van hac » van ha, van hai, van chat
van hoc » van hoa
lap cua » lai cua, tap cua, lam cua
x hoi » xa hoi, o hoi, x ho
gia » giao

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) or (thu sach)) ky nang x hoi. thi ((van hac) OR (van hoc)) tac gia thanh lap cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang x hoi. thi ((van hac) OR (van hoc)) tac gia thanh lap cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang x hoi. thi ((van hac) OR (van hoc)) tac gia thanh lap cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang x hoi. thi ((van hac) OR (van hoc)) tac gia thanh lap cua triet*.