Perhaps you should try some spelling variations:
"coder coding complexity metrics programmers" » "coder clowning complexity metrics programmers" (Expand search), "coder modeling complexity metrics programmers" (Expand search), "coder code complexity metrics programmers" (Expand search), "modern coding complexity metrics programmers" (Expand search), "color coding complexity metrics programmers" (Expand search), "odor coding complexity metrics programmers" (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 coding complexity metrics programmers\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coding complexity metrics programmers ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coding complexity metrics programmers") OR ("api python python python programming"))*.