Perhaps you should try some spelling variations:
"coder coding efficiency learning problem" » "coder coding efficient learning problem" (Expand search), "coder coding efficiency weaning problem" (Expand search), "coder coding efficiency regarding problem" (Expand search), "coder feeding efficiency learning problem" (Expand search), "coder cutting efficiency learning problem" (Expand search), "coder modelling efficiency learning problem" (Expand search), "coder coding efficiency learning problems" (Expand search), "coder coding efficiency planning problem" (Expand search), "coder coding efficiency learning program" (Expand search), "modern coding efficiency learning problem" (Expand search), "color coding efficiency learning problem" (Expand search), "odor coding efficiency learning 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 coding efficiency learning problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding efficiency learning problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding efficiency learning problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding efficiency learning problem") OR ("api python python python programming"))*.