Perhaps you should try some spelling variations:
"coder precoder problems teaching programming" » "coder precoder problems teaching program" (Expand search), "coder precoces problemas teaching programming" (Expand search), "coder order problems teaching programming" (Expand search), "coder prodi problems teaching programming" (Expand search), "coder precoder process teaching programming" (Expand search), "coder precoder programs teaching programming" (Expand search), "coder precoder problematic teaching programming" (Expand search), "coder decoder problems 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 precoder problems teaching programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder problems teaching programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder problems teaching programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder problems teaching programming") OR ("api python python python programming"))*.