Perhaps you should try some spelling variations:
"coder coder number variable density" » "coder coder number variants density" (Expand search), "coder coder under variable density" (Expand search), "coder coder number variant density" (Expand search), "coder cover number variable density" (Expand search), "coder codes numbers variable density" (Expand search), "coder over number variable density" (Expand search), "coder decoder number variable density" (Expand search), "code code number variable density" (Expand search), "decoder codec number variable density" (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 number variable density") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder number variable density\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder number variable density ) OR ( api python python python programming ))*.