Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh cho » thanh pho, thanh cha, thanh chu
cua triet » cua viet, su triet, va triet
tu sach » thu sach, su sach, te sach
ly nang » ky nang, ly hang, ly vang
can ban » toan ban
cho cua » co cua, chi cua, cho ca
va hoc » van hoc
x hoi » xa hoi, o hoi, x ho

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 (thuat sach)) ly nang x hoi. lieu va hoc ((can ban) OR (van ban)) thanh cho cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ly nang x hoi. lieu va hoc ((can ban) OR (van ban)) thanh cho cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thuat sach)) ly nang x hoi. lieu va hoc ((can ban) OR (van ban)) thanh cho cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ly nang x hoi. lieu va hoc ((can ban) OR (van ban)) thanh cho cua triet*.