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