Perhaps you should try some spelling variations:
"germany ecological empire" » "germany geological empire", "germany psychological empire", "germany economic empire", "germany ecological exile", "germany ecological emptiness", "germany ecological ethics"
"germany colonies empire" » "germany cologne empire", "german companies empire", "germany colonial empires", "germany coloured empire", "germany colonialism empire"
"germany colonial empire" » "german colonial empire", "german colonies empire", "germany clinical empire", "germany colonial empires"
"germany colombia empire" » "demand colombia empire", "germany cologne empire", "summary colombia empire", "germany colombia amparo", "germany colombia entre", "germany colombia epr"

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: (("germany colonies empire") OR ((((("germany colonial empire") OR ("germany ecological empire"))) OR ("germany colombia empire")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"germany colonies empire\") or (((((\"germany colonial empire\") OR (\"germany ecological empire\"))) or (\"germany colombia empire\"))))".
• Removing quotes may allow a broader search: (( germany colonies empire ) or ((((( germany colonial empire ) OR ( germany ecological empire ))) or ( germany colombia empire )))).
• Adding a wildcard symbol may retrieve word variants: (("germany colonies empire") or ((((("germany colonial empire") OR ("germany ecological empire"))) or ("germany colombia empire"))))*.