Perhaps you should try some spelling variations:
tranh luan » trinh luan, trinh luat, doanh luan
lieu tinh » trieu tinh, diep tinh, bien tinh
nhung don » nhung van
dung cong » dung trong
nhung bo » nhung bi, nhung bai, trung bo
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan 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 ((((nhung don) OR (nhung bo))) or (dung cong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho lieu tinh - canh tranh luan ((((nhung don) OR (nhung bo))) OR (dung cong)) dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho lieu tinh - canh tranh luan ((((nhung don) OR (nhung bo))) or (dung cong)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho lieu tinh - canh tranh luan ((((nhung don) OR (nhung bo))) or (dung cong)) dan toan cao*.