Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hai » thanh phan, thanh hoa, thanh san
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
dao duc » giao duc, tao duoc
duc ban » duc tan, duc van, dua ban
y nang » ly nang, v nang, may nang
va dao » ca dao

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