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