Perhaps you should try some spelling variations:
"coder coder effectiveness in programming" » "coder code effectiveness in programming" (Expand search), "coder model effectiveness in programming" (Expand search), "coder under effectiveness in programming" (Expand search), "coder coder effectiveness and programming" (Expand search), "coder coder effectiveness _ programming" (Expand search), "coder coder effectiveness c programming" (Expand search), "coder decoder effectiveness in programming" (Expand search), "code code effectiveness in programming" (Expand search), "decoder codec effectiveness in programming" (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)

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