Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
thu sach » thuat sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, lieu va
va triet » va thiet, va trien, ve triet
tu sach » su sach, te sach, tu cach
dao duc » giao duc, tao duoc
duc ban » duc tan, duc van, dua ban
cua te » cua tu
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 (thu sach)) ky nang x hoi. hieu van dao duc ban thanh vai ((va triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang x hoi. hieu van dao duc ban thanh vai ((va triet) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ky nang x hoi. hieu van dao duc ban thanh vai ((va triet) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ky nang x hoi. hieu van dao duc ban thanh vai ((va triet) or (cua te))*.