Perhaps you should try some spelling variations:
"coder code loops open problems" » "coder code loops on problems" (Expand search), "code code loops open problems" (Expand search), "modern code loops open problems" (Expand search), "color code loops open problems" (Expand search), "coder code doors open problems" (Expand search), "coder code moocs open 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 code loops open problems\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder code loops open problems ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder code loops open problems") OR ("api python python python programming"))*.