Perhaps you should try some spelling variations:
hanh luan » khanh luan, hang luan, hanh luat
dung cong » dung trong
cao sang » cao dang, cao tang, cao bang
van dung » van dong, xay dung, tin dung
cong dan » cong san, cong tan, huong dan
chan cau » phan cau, chinh cau, nhanh cau
cap cao » cap cho, ca cao, cap can
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: cap cao sang - hanh luan van dung cong dan ((chan cau) OR (can cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cap cao sang - hanh luan van dung cong dan ((chan cau) OR (can cau))*".