Perhaps you should try some spelling variations:
"coder coder using markov problem" » "coder coder using manakov problem" (Expand search), "coder coder using market problem" (Expand search), "coder decoder using markov problem" (Expand search), "code code using markov problem" (Expand search), "decoder codec using markov problem" (Expand search), "coder coders using markov problem" (Expand search), "coder cover using markov problem" (Expand search), "coder code using markov 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 using markov problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder using markov problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder using markov problem ) OR ( api python python python programming ))*.