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