Perhaps you should try some spelling variations:
"coder precoder time parallel processing" » "coder precoder time parallel programming" (Expand search), "coder decoder time parallel processing" (Expand search), "coder recovery time parallel processing" (Expand search), "coder proper time parallel processing" (Expand search), "coder precoded mimo parallel processing" (Expand search), "coder precoder the parallel processing" (Expand search), "coder precoder in parallel processing" (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 precoder time parallel processing") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder time parallel processing\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder time parallel processing ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder time parallel processing") OR ("_ python python python programming"))*.