Perhaps you should try some spelling variations:
"coder coder fft concurrent programming" » "coder coder fft constraint programming" (Expand search), "coder coder soft concurrent programming" (Expand search), "coder coder fft concorrente programming" (Expand search), "coder coder of concurrent programming" (Expand search), "coder decoder fft concurrent programming" (Expand search), "code code fft concurrent programming" (Expand search), "decoder codec fft concurrent programming" (Expand search)
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ 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 fft concurrent programming") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder fft concurrent programming\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder fft concurrent programming ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder fft concurrent programming") OR ("on python python python programming"))*.