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