Perhaps you should try some spelling variations:
"coder optimization algorithm clustering problem" » "coder optimization algorithm considering problem" (Expand search), "coder optimization algorithms considering problem" (Expand search), "coder optimization algorithm using problem" (Expand search), "code optimization algorithm clustering problem" (Expand search), "modern optimization algorithm clustering problem" (Expand search), "powder optimization algorithm clustering problem" (Expand search), "coder optimization algorithm covering 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 optimization algorithm clustering problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder optimization algorithm clustering problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder optimization algorithm clustering problem") OR ("api python python python programming"))*.