Perhaps you should try some spelling variations:
"coder precoder reference _ programming" » "coder barcode reference _ programming" (Expand search), "coder precos referente _ programming" (Expand search), "coder barcodes reference _ programming" (Expand search), "coder decoder reference _ programming" (Expand search)
"via python python python programming" » "via pythons python python programming" (Expand search), "via piton python python programming" (Expand search), "via pitons python python programming" (Expand search), "in 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 reference _ programming") OR ("via python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder reference _ programming\") OR (\"via python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder reference _ programming ) OR ( via python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder reference _ programming") OR ("via python python python programming"))*.