Perhaps you should try some spelling variations:
"maps communication history" » "maps telecommunication history", "maps communication sector", "maps communication theory", "mass communication history", "mass communications history", "lea's communication history"
"true civilization history" » "true globalization history", "true organization history", "oxus civilization history", "four civilizations history", "korea civilization history"
"mars cooperation scale" » "mars cooperation case", "mars cooperation state", "mars cooperation sara", "early cooperation scale", "area cooperation scale", "arab cooperation scale"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("true civilization history") or ("mars cooperation scale"))) or ("maps communication history"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("true civilization history") OR ("mars cooperation scale"))) OR ("maps communication history")).
• Removing quotes may allow a broader search: (((( true civilization history ) or ( mars cooperation scale ))) or ( maps communication history )).
• Adding a wildcard symbol may retrieve word variants: (((("true civilization history") or ("mars cooperation scale"))) or ("maps communication history"))*.