Perhaps you should try some spelling variations:
"coder sparse array algorithm based" » "coder sparse array algorithms based" (Expand search), "coder sparse greedy algorithm based" (Expand search), "coder sparse massey algorithm based" (Expand search), "over sparse array algorithm based" (Expand search), "under sparse array algorithm based" (Expand search), "novel sparse array algorithm based" (Expand search), "coder sparse arrays algorithm based" (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 sparse array algorithm based") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder sparse array algorithm based\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder sparse array algorithm based ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder sparse array algorithm based") OR ("api python python python programming"))*.