Perhaps you should try some spelling variations:
"coder coder model checking program" » "coder coder model checklist program" (Expand search), "coder coder model changing program" (Expand search), "coder coder model helping program" (Expand search), "coder decoder model checking program" (Expand search), "code code model checking program" (Expand search), "decoder codec model checking program" (Expand search), "coder cover model checking program" (Expand search), "coder copper model checking 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 coder model checking program\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder model checking program ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder model checking program") OR ("api python python python programming"))*.