Perhaps you should try some spelling variations:
"coder coder number partitioning problem" » "coder coder niche partitioning problem" (Expand search), "coder coder matter partitioning problem" (Expand search), "coder coder nutrient partitioning problem" (Expand search), "coder cover number partitioning problem" (Expand search), "coder codes numbers partitioning problem" (Expand search), "coder over number partitioning problem" (Expand search), "coder decoder number partitioning problem" (Expand search), "code code number partitioning problem" (Expand search), "decoder codec number partitioning 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 number partitioning problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder number partitioning problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder number partitioning problem") OR ("api python python python programming"))*.