Perhaps you should try some spelling variations:
khia canh » kho canh, thi canh
hanh luan » khanh luan, hang luan, hanh luat
hang cong » dang cong, hang nong, bang cong
doi khia » doi khi, noi khoa, hoi khoa
van hang » van khang, van hoang, van thang
cong tan » cong tac, cong san, cong thanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi khia canh - hanh luan van hang cong tan ((toan tap) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi khia canh - hanh luan van hang cong tan ((toan tap) OR (van ban))*".