Perhaps you should try some spelling variations:
"coder using clustering algorithm doi" » "coder using clustering algorithms doi" (Expand search), "coder and clustering algorithm doi" (Expand search), "coder means clustering algorithm doi" (Expand search), "coder using clustering algorithm ii" (Expand search), "coder using clustering algorithm dc" (Expand search), "coders using clustering algorithm doi" (Expand search), "cover using clustering algorithm doi" (Expand search), "code using clustering algorithm doi" (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 using clustering algorithm doi") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder using clustering algorithm doi\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder using clustering algorithm doi ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder using clustering algorithm doi") OR ("api python python python programming"))*.