Perhaps you should try some spelling variations:
"coder optimization python open problems" » "coder optimization method open problems" (Expand search), "coder optimization option open problems" (Expand search), "coder optimization methods open problems" (Expand search), "code optimization python open problems" (Expand search), "modern optimization python open problems" (Expand search), "powder optimization python open problems" (Expand search), "coder optimization python on problems" (Expand search), "coder optimization python opengl problems" (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 optimization python open problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder optimization python open problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder optimization python open problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder optimization python open problems") OR ("api python python python programming"))*.