Perhaps you should try some spelling variations:
"coder data clustering algorithms based" » "coder data clustering algorithm based" (Expand search), "coder data clustering algorithms and" (Expand search), "cover data clustering algorithms based" (Expand search), "code data clustering algorithms based" (Expand search), "border data clustering algorithms based" (Expand search)
"api pitons python python programming" » "api pitons pythons python programming" (Expand search), "api pitons piton python programming" (Expand search), "api pitons pytm python programming" (Expand search), "api citons python python programming" (Expand search), "api pitoni python python programming" (Expand search), "api pitoes 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 data clustering algorithms based\") OR (\"api pitons python python programming\"))~".
• Removing quotes may allow a broader search: (( coder data clustering algorithms based ) OR ( api pitons python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder data clustering algorithms based") OR ("api pitons python python programming"))*.