Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
luan phong » luan phuong, xuan phuong, van phong
lieu tinh » trieu tinh, diep tinh, bien tinh
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than tap » toan tap, han tap, phan tap
ho lieu » so lieu, co lieu, ho kieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho lieu tinh - canh tranh luan phong ((cong dan) or (cong tan)) than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - canh tranh luan phong ((cong dan) OR (cong tan)) than tap.
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - canh tranh luan phong ((cong dan) or (cong tan)) than tap*.