Perhaps you should try some spelling variations:
"coder coder containing variable density" » "coder coder containing vegetable density" (Expand search), "coder coder controlling variables density" (Expand search), "coder coder confounding variables density" (Expand search), "coder copper containing variable density" (Expand search), "coder powder containing variable density" (Expand search), "coder model containing variable density" (Expand search), "coder decoder containing variable density" (Expand search), "code code containing variable density" (Expand search), "decoder codec containing 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.

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