Perhaps you should try some spelling variations:
"coder coder complexity metrics produced" » "coder code complexity metrics produced" (Expand search), "coder model complexity metrics produced" (Expand search), "coder lower complexity metrics produced" (Expand search), "coder coder complexity matrices produced" (Expand search), "coder coder complexity metricas producao" (Expand search), "coder coder complexity fabrics produced" (Expand search), "coder decoder complexity metrics produced" (Expand search), "code code complexity metrics produced" (Expand search), "decoder codec complexity metrics produced" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons 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 coder complexity metrics produced") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder complexity metrics produced\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder complexity metrics produced ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder complexity metrics produced") OR ("_ python python python programming"))*.