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 code in parallel programming" » "coder code and parallel programming" (Expand search), "coder code _ parallel programming" (Expand search), "coder code of parallel programming" (Expand search), "code code in parallel programming" (Expand search), "modern code in parallel programming" (Expand search), "color code in 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 code in parallel programming") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder code in parallel programming\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder code in parallel programming ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder code in parallel programming") OR ("_ python python python programming"))*.