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