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