Perhaps you should try some spelling variations:
"coder formulation _ coding problems" » "powder formulation _ coding problems" (Expand search), "order formulation _ coding problems" (Expand search), "model formulation _ coding problems" (Expand search), "coder formulation _ loading problems" (Expand search), "coder formulation _ counting problems" (Expand search), "coder formulation _ covering problems" (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 formulation _ coding problems\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder formulation _ coding problems ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder formulation _ coding problems") OR ("api python python python programming"))*.