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 pitons python python programming" » "api pitons pythons python programming" (Expand search), "api pitons piton python programming" (Expand search), "api pitons pytm python programming" (Expand search), "api citons python python programming" (Expand search), "api pitoni python python programming" (Expand search), "api pitoes 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 pitons python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder scheme computer programming\") OR (\"api pitons python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder scheme computer programming ) OR ( api pitons python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder scheme computer programming") OR ("api pitons python python programming"))*.