Perhaps you should try some spelling variations:
thang long » thanh cong
hanh tranh » canh tranh, hanh trinh, hanh trang
mot trieu » mot chieu, mot tri, mon triet
tranh cua » doanh cua, manh cua
hang nong » han tong
ho trieu » 25 trieu, 30 trieu, ho chieu
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho trieu) or (mot trieu)) tinh - hanh tranh cua ((hang nong) OR (thang long)) dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho trieu) OR (mot trieu)) tinh - hanh tranh cua ((hang nong) OR (thang long)) dan than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) or (mot trieu)) tinh - hanh tranh cua ((hang nong) OR (thang long)) dan than tap".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) or (mot trieu)) tinh - hanh tranh cua ((hang nong) OR (thang long)) dan than tap*.