Perhaps you should try some spelling variations:
"coder based optimization algorithm problem" » "coder and optimization algorithm problem" (Expand search), "coder based optimization algorithms problem" (Expand search), "coder based optimization algoritmo problema" (Expand search), "coder based optimization logarithm problem" (Expand search), "code based optimization algorithm problem" (Expand search), "foder based optimization algorithm problem" (Expand search), "codec based optimization algorithm 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 based optimization algorithm problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder based optimization algorithm problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder based optimization algorithm problem") OR ("api python python python programming"))*.