Perhaps you should try some spelling variations:
"coder coder calculus teaching programming" » "coder coder calculus teaching program" (Expand search), "coder order calculus teaching programming" (Expand search), "coder jones calculus teaching programming" (Expand search), "coder choquet calculus teaching programming" (Expand search), "coder decoder calculus teaching programming" (Expand search), "code code calculus teaching programming" (Expand search), "decoder codec calculus teaching programming" (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)

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 calculus teaching programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder calculus teaching programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder calculus teaching programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder calculus teaching programming") OR ("api python python python programming"))*.