Perhaps you should try some spelling variations:
"coder coder robot packing problem" » "coder coder robot planning problem" (Expand search), "coder coder robot picking problem" (Expand search), "coder coder robot walking problem" (Expand search), "coder coder robotic picking problem" (Expand search), "coder decoder robot packing problem" (Expand search), "code code robot packing problem" (Expand search), "decoder codec robot packing problem" (Expand search), "coder clever robot packing problem" (Expand search), "coder soccer robot packing 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 robot packing problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder robot packing problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder robot packing problem ) OR ( api python python python programming ))*.