Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
su triet » su viet, su tien, ve triet
quoc bao » quoc oai, hoc bao, quoc va
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
cuc ban » cua ban, cac ban, cuu ban
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
sai ky » sac ky
tu sai » tu bai, tu san, tu cai

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky sang ma hoa. hieu van tham ((cuc ban) OR (quoc bao)) hanh vi ((cua triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky sang ma hoa. hieu van tham ((cuc ban) or (quoc bao)) hanh vi ((cua triet) OR (su triet))~".
• Adding a wildcard symbol may retrieve word variants: tu sai ky sang ma hoa. hieu van tham ((cuc ban) or (quoc bao)) hanh vi ((cua triet) OR (su triet))*.