Perhaps you should try some spelling variations:
"coder coder precoder scheme problems" » "coder coder precoding scheme problems" (Expand search), "coder coder precoder some problems" (Expand search), "coder coder precoder school problems" (Expand search), "coder coder precoder scale problems" (Expand search), "coder coder decoder scheme problems" (Expand search), "coder decoder precoder scheme problems" (Expand search), "code code precoder scheme problems" (Expand search), "decoder codec precoder scheme problems" (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 precoder scheme problems\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder precoder scheme problems ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder precoder scheme problems") OR ("api python python python programming"))*.