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