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