Perhaps you should try some spelling variations:
"coder precoder theorem _ programming" » "coder browder theorem _ programming" (Expand search), "coder cover theorem _ programming" (Expand search), "coder decoder theorem _ 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 theorem _ programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder theorem _ programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder theorem _ programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder theorem _ programming") OR ("api python python python programming"))*.