Perhaps you should try some spelling variations:
"coder representations and coding problem" » "encoder representations and coding problem" (Expand search), "power representations and coding problem" (Expand search), "node representations and coding problem" (Expand search), "coder representation and coding problem" (Expand search), "coder representations and coding problems" (Expand search), "coder representations and coping problem" (Expand search), "coder representations and loading problem" (Expand search), "coder representations and cooling problem" (Expand search), "coder representations and cooking problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder representations and coding problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder representations and coding problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder representations and coding problem") OR ("api python python python programming"))*.