Perhaps you should try some spelling variations:
"cohen operators and coding problems" » "care operators and coding problems" (Expand search), "join operators and coding problems" (Expand search), "boolean operators and coding problems" (Expand search), "cohen operators and loading problems" (Expand search), "cohen operators and counting problems" (Expand search), "cohen operators and covering problems" (Expand search), "cohen operations and coding problems" (Expand search), "cohen operators in coding problems" (Expand search), "cohen operators on coding problems" (Expand search), "cohen operators and coping problems" (Expand search), "cohen operators and cooling problems" (Expand search), "cohen operators and cooking problems" (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), "manim 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: (("cohen operators and coding problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cohen operators and coding problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( cohen operators and coding problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("cohen operators and coding problems") OR ("api python python python programming"))*.