Perhaps you should try some spelling variations:
"coder propagation models coding problem" » "coder propagation model coding problem" (Expand search), "mode propagation models coding problem" (Expand search), "model propagation models coding problem" (Expand search), "modes propagation models coding problem" (Expand search), "coder propagation models coding problems" (Expand search), "coder propagation models coping problem" (Expand search), "coder propagation models loading problem" (Expand search), "coder propagation modern coding problem" (Expand search), "coder propagation models moving problem" (Expand search), "coder propagation models modeling 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 propagation models coding problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder propagation models coding problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder propagation models coding problem") OR ("api python python python programming"))*.