Perhaps you should try some spelling variations:
"coder coder modeling sample problem" » "coder coder modeling example problem" (Expand search), "coder coder modelling example problem" (Expand search), "coder coder modeling complex problem" (Expand search), "coder cover modeling sample problem" (Expand search), "coder cover modelling sample problem" (Expand search), "coder order modeling sample problem" (Expand search), "coder coder modeling same problems" (Expand search), "coder decoder modeling sample problem" (Expand search), "code code modeling sample problem" (Expand search), "decoder codec modeling sample 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder modeling sample problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder modeling sample problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder modeling sample problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder modeling sample problem") OR ("api python python python programming"))*.