Perhaps you should try some spelling variations:
"entropic graph" » "entropic graphs", "entropic gravity"
"entropic trace" » "entropic black", "entropic force", "entropic image"
"centric graph" » "generic graph", "metric graphs", "centric group"
"topic graph" » "logic graph"

Try widening your search to All Fields.

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: (((((("entropic graph") OR ("centric graph"))) OR ("entropic trace"))) OR ("topic graph")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"entropic graph\") OR (\"centric graph\"))) or (\"entropic trace\"))) or (\"topic graph\"))".
• Removing quotes may allow a broader search: (((((( entropic graph ) OR ( centric graph ))) or ( entropic trace ))) or ( topic graph )).
• Adding a wildcard symbol may retrieve word variants: (((((("entropic graph") OR ("centric graph"))) or ("entropic trace"))) or ("topic graph"))*.