Perhaps you should try some spelling variations:
"coder coder decoder machine operators" » "coder encoder decoder machine operators" (Expand search), "code code decoder machine operators" (Expand search), "decoder codec decoder machine operators" (Expand search), "codesc poder decoder machine operators" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ 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 coder decoder machine operators") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder decoder machine operators\") OR (\"in python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder decoder machine operators ) OR ( in python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder decoder machine operators") OR ("in python python python programming"))*.