Perhaps you should try some spelling variations:
"coder decoder string discrete programming" » "coder decoder string distributed programming" (Expand search), "coder decoder string extreme programming" (Expand search), "coder decoder string scratch programming" (Expand search), "coder decoder stroking discrete programming" (Expand search), "coder decoder shaping discrete programming" (Expand search), "coder decoder varying discrete programming" (Expand search), "coder decoder using discrete programming" (Expand search), "encoder decoder string discrete programming" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons 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 decoder string discrete programming") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder decoder string discrete programming\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder decoder string discrete programming ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder decoder string discrete programming") OR ("_ python python python programming"))*.