Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
doi trieu » dong trieu, doi chieu, hoi tieu
doi trinh » doc trinh, doi tinh, dong trinh
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
manh cua » doanh cua, ban cua
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi trieu) OR (doi trinh)) tinh - canh manh cua nhung ((huong dan) or (cong thanh)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi trieu) OR (doi trinh)) tinh - canh manh cua nhung ((huong dan) OR (cong thanh)) than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi trieu) OR (doi trinh)) tinh - canh manh cua nhung ((huong dan) or (cong thanh)) than cau".
• Adding a wildcard symbol may retrieve word variants: ((doi trieu) OR (doi trinh)) tinh - canh manh cua nhung ((huong dan) or (cong thanh)) than cau*.