Perhaps you should try some spelling variations:
"coder coder sampling optimization problem" » "coder coder modeling optimization problem" (Expand search), "coder coder sizing optimization problem" (Expand search), "coder coder simplex optimization problem" (Expand search), "coder coder sampling optimization problems" (Expand search), "coder under sampling optimization problem" (Expand search), "coder over sampling optimization problem" (Expand search), "coder core sampling optimization problem" (Expand search), "coder decoder sampling optimization problem" (Expand search), "code code sampling optimization problem" (Expand search), "decoder codec sampling 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 coder sampling optimization problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder sampling optimization problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder sampling optimization problem") OR ("api python python python programming"))*.