Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
van thanh » ban thanh, van tuan
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
thu sach » tu sach, thuat sach, thuoc sach
su triet » su viet, su tien, ve triet
sach ky » sac ky, sach y, sach ty
duc van » duc va, duc tan, duc manh
va tham » van tham, va cham, va thuat
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 ky nang x hoi. lieu ((va tham) or (va thanh)) duc van thanh di ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x hoi. lieu ((va tham) OR (va thanh)) duc van thanh di ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x hoi. lieu ((va tham) or (va thanh)) duc van thanh di ((cua triet) or (su triet))*.