Perhaps you should try some spelling variations:
nhung trong » hung trong, nhung tuong, thuong trong
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
ho thiet » hoc thiet, hoa thiet, hoc thieu
so thiet » soc thiet, hoc thiet, hoa thiet
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho thiet) OR (so thiet)) tach - canh tranh van nhung trong ((van toan) or (van tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho thiet) OR (so thiet)) tach - canh tranh van nhung trong ((van toan) OR (van tuan)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho thiet) OR (so thiet)) tach - canh tranh van nhung trong ((van toan) or (van tuan)) ban*".