Perhaps you should try some spelling variations:
"coder function in clustering problem" » "coder function in covering problem" (Expand search), "modern function in clustering problem" (Expand search), "power function in clustering problem" (Expand search), "over function in clustering problem" (Expand search), "coder function on clustering problem" (Expand search), "coder function spin clustering problem" (Expand search), "coder function and clustering 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 function in clustering problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder function in clustering problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder function in clustering problem") OR ("api python python python programming"))*.