Perhaps you should try some spelling variations:
"coder coder sampling packing problem" » "coder coder sampling planning problem" (Expand search), "coder coder handling packing problem" (Expand search), "coder coder sampling mapping problem" (Expand search), "coder under sampling packing problem" (Expand search), "coder over sampling packing problem" (Expand search), "coder core sampling packing problem" (Expand search), "coder decoder sampling packing problem" (Expand search), "code code sampling packing problem" (Expand search), "decoder codec sampling 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder sampling packing problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder sampling packing problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder sampling packing problem") OR ("api python python python programming"))*.