Perhaps you should try some spelling variations:
"coder and coverage material function" » "coder and coverage materials function" (Expand search), "coder and coverage maternal function" (Expand search), "coder and covering material function" (Expand search), "coder and coverage paternal function" (Expand search), "coder and cover material function" (Expand search), "code and coverage material function" (Expand search), "codes and coverage material function" (Expand search), "poder and coverage material function" (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)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("coder and coverage material function") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder and coverage material function\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder and coverage material function ) OR ( api python python python programming ))*.