Perhaps you should try some spelling variations:
"coder coding text clustering problem" » "coder coding text covering problem" (Expand search), "coder coding means clustering problem" (Expand search), "modern coding text clustering problem" (Expand search), "color coding text clustering problem" (Expand search), "odor coding text clustering problem" (Expand search), "coder encoding text clustering problem" (Expand search), "coder coding tests clustering problem" (Expand search), "coder moving text 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coding text clustering problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding text clustering problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coding text clustering problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coding text clustering problem") OR ("api python python python programming"))*.