Perhaps you should try some spelling variations:
"coder precoder scheme computer programming" » "coder precoder scheme computer program" (Expand search), "coder precoder scheme computer programs" (Expand search), "coder precoding scheme computer programming" (Expand search), "coder precoder schemes computer programming" (Expand search), "coder precoder science computer programming" (Expand search), "coder precoder school computer programming" (Expand search), "coder decoder scheme computer programming" (Expand search)
"api pythons python python programming" » "api pitons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pythons piton python programming" (Expand search), "api pythons pitons python programming" (Expand search), "api pythons pytm python programming" (Expand search), "api 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 precoder scheme computer programming") OR ("api pythons python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder scheme computer programming\") OR (\"api pythons python python programming\"))*".
• Removing quotes may allow a broader search: (( coder precoder scheme computer programming ) OR ( api pythons python python programming ))*.