Perhaps you should try some spelling variations:
"mars civilization history" » "mars globalization history", "mars organization history", "war civilization history", "miami civilization history", "oxus civilization history"
"de cooperation studies" » "de cooperation series", "de cooperation sources", "de cooperation implies", "2 cooperation studies", "trade cooperation studies", "area cooperation studies"
"city cooperation history" » "city corporation history", "city federation history", "china cooperation history", "city corporations history"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mars civilization history") OR ("de cooperation studies"))) OR ("city cooperation history"))~.
• Removing quotes may allow a broader search: (((( mars civilization history ) or ( de cooperation studies ))) or ( city cooperation history ))~.
• Adding a wildcard symbol may retrieve word variants: (((("mars civilization history") or ("de cooperation studies"))) or ("city cooperation history"))*.