Perhaps you should try some spelling variations:
"coder coder on modelling problem" » "coder coder on modelling problems" (Expand search), "coder coder on modeling problems" (Expand search), "coder coder on covering problem" (Expand search), "coder coder on modeling problem" (Expand search), "coder coder in modelling problem" (Expand search), "coder coder and modelling problem" (Expand search), "coder decoder on modelling problem" (Expand search), "code code on modelling problem" (Expand search), "decoder codec on modelling problem" (Expand search), "coder code on modelling problem" (Expand search), "coder codes on modelling problem" (Expand search), "coder powder on modelling 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 on modelling problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder on modelling problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder on modelling problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder on modelling problem") OR ("api python python python programming"))*.