Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
va triet » va thiet, va trien, ve triet
hieu ve » hieu va, hieu van
dao duc » tao duoc
y nang » ky nang, ly nang, v nang
va dan » ca dan, va dao, va dau
doi va » hoi va, noi va, dai va
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: thu sach y nang x hoi. hieu ve ((giao duc) or (dao duc)) ((van hanh) or (va dan)) doi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang x hoi. hieu ve ((giao duc) OR (dao duc)) ((van hanh) OR (va dan)) doi va triet.
• Adding a wildcard symbol may retrieve word variants: thu sach y nang x hoi. hieu ve ((giao duc) or (dao duc)) ((van hanh) or (va dan)) doi va triet*.