Perhaps you should try some spelling variations:
"coder model complexity _ processing" » "coder code complexity _ processing" (Expand search), "coder social complexity _ processing" (Expand search), "coder and complexity _ processing" (Expand search), "cover model complexity _ processing" (Expand search), "decoder model complexity _ processing" (Expand search), "copper model complexity _ processing" (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 model complexity _ processing\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder model complexity _ processing ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder model complexity _ processing") OR ("api python python python programming"))*.