Perhaps you should try some spelling variations:
"coder coding descent optimization problem" » "coder coding design optimization problem" (Expand search), "coder coding set optimization problem" (Expand search), "coder coding direct optimization problem" (Expand search), "coder coding descent optimization problems" (Expand search), "coder coding dependent optimization problem" (Expand search), "modern coding descent optimization problem" (Expand search), "color coding descent optimization problem" (Expand search), "odor coding descent optimization 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 coding descent optimization problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coding descent optimization problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coding descent optimization problem") OR ("api python python python programming"))*.