Perhaps you should try some spelling variations:
"coder coding efficient singlet problem" » "coder coding efficiency singlet problem" (Expand search), "coder using efficient singlet problem" (Expand search), "coder crowding coefficient singlet problem" (Expand search), "coder coding efficient singer problem" (Expand search), "coder coding efficient singular problem" (Expand search), "coder coding efficient single probe" (Expand search), "modern coding efficient singlet problem" (Expand search), "color coding efficient singlet problem" (Expand search), "odor coding efficient singlet 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.

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