Perhaps you should try some spelling variations:
"coder communication network coding problem" » "coder communication networks coding problem" (Expand search), "coder communication between coding problem" (Expand search), "codes communication network coding problem" (Expand search), "modern communication network coding problem" (Expand search), "power communication network coding problem" (Expand search), "coder communication network coding problems" (Expand search), "coder communication network coping problem" (Expand search), "coder communication network loading 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder communication network coding problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder communication network coding problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder communication network coding problem ) OR ( api python python python programming ))*.