Perhaps you should try some spelling variations:
khong xuong » khong dung, hong vuong, thong duong
khong tuong » khong trong, phong tuong, thong thuong
hoang xanh » hoang anh, hoang van, hoang minh
tieu sach » chieu sach, dien sach, te sach
van thanh » ban thanh, van tuan
thanh ban » thanh san, thanh van, thanh bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - ((canh tranh) or (hoang xanh)) hua ((khong tuong) OR (khong xuong)) van thanh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - ((canh tranh) OR (hoang xanh)) hua ((khong tuong) OR (khong xuong)) van thanh ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sach - ((canh tranh) or (hoang xanh)) hua ((khong tuong) OR (khong xuong)) van thanh ban".
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - ((canh tranh) or (hoang xanh)) hua ((khong tuong) OR (khong xuong)) van thanh ban*.