Perhaps you should try some spelling variations:
"coder and coverage with singleton" » "coder and coverage with singletons" (Expand search), "coder and coverage with nonsingleton" (Expand search), "coder and coverage with single" (Expand search), "coder and coverage in singleton" (Expand search), "coder and cover with singleton" (Expand search), "code and coverage with singleton" (Expand search), "codes and coverage with singleton" (Expand search), "poder and coverage with singleton" (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 and coverage with singleton") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder and coverage with singleton\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder and coverage with singleton ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder and coverage with singleton") OR ("api python python python programming"))*.