Perhaps you should try some spelling variations:
"coder coder mine packing problem" » "coder coder mine planning problem" (Expand search), "coder coder line packing problem" (Expand search), "coder coder bin packing problem" (Expand search), "coder coder in packing problem" (Expand search), "coder decoder mine packing problem" (Expand search), "code code mine packing problem" (Expand search), "decoder codec mine packing problem" (Expand search), "coder copper mine 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 mine packing problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder mine packing problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder mine packing problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder mine packing problem") OR ("api python python python programming"))*.