Perhaps you should try some spelling variations:
"coder coder string theory critical" » "coder coder nursing theory critical" (Expand search), "coder cordel string theory critical" (Expand search), "coder closed string theory critical" (Expand search), "coder modelo string theory critical" (Expand search), "coder decoder string theory critical" (Expand search), "code code string theory critical" (Expand search), "decoder codec string theory critical" (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 coder string theory critical") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder string theory critical\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder string theory critical ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder string theory critical") OR ("api python python python programming"))*.