Perhaps you should try some spelling variations:
"coder and complexity approximation based" » "coder and complexity approximations based" (Expand search), "coder and complexity application based" (Expand search), "coder and complexity improvisation based" (Expand search), "coder and complexity approximation and" (Expand search), "coder and complexity approximations and" (Expand search), "code and complexity approximation based" (Expand search), "codes and complexity approximation based" (Expand search), "poder and complexity approximation 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder and complexity approximation based\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder and complexity approximation based ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder and complexity approximation based") OR ("api python python python programming"))*.