Perhaps you should try some spelling variations:
"coder coder hops halting problem" » "coder coder hops routing problem" (Expand search), "coder coder hops packing problem" (Expand search), "coder coder hops cutting problem" (Expand search), "coder coder hops hamming problem" (Expand search), "coder decoder hops halting problem" (Expand search), "code code hops halting problem" (Expand search), "decoder codec hops halting 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder hops halting problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder hops halting problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder hops halting problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder hops halting problem") OR ("api python python python programming"))*.