Perhaps you should try some spelling variations:
"coder xcode java clustering problem" » "coder xcode java covering problem" (Expand search), "coder xcode data clustering problem" (Expand search), "coder xcode and clustering problem" (Expand search), "coder xcode via clustering problem" (Expand search), "code code java clustering problem" (Expand search), "coder decoder java clustering problem" (Expand search), "coder codes java 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 xcode java clustering problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder xcode java clustering problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder xcode java clustering problem") OR ("api python python python programming"))*.