Perhaps you should try some spelling variations:
"coder code and combinatorics on" » "coder code and combination on" (Expand search), "coder code and combinatorics of" (Expand search), "coder code and combinatorics in" (Expand search), "coder code and combinatorics and" (Expand search), "code code and combinatorics on" (Expand search), "modern code and combinatorics on" (Expand search), "color code and combinatorics on" (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 code and combinatorics on") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder code and combinatorics on\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder code and combinatorics on ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder code and combinatorics on") OR ("api python python python programming"))*.