Perhaps you should try some spelling variations:
"coder presentation and gpu programming" » "poster presentation and gpu programming" (Expand search), "cancer presentation and gpu programming" (Expand search), "case presentation and gpu programming" (Expand search), "coder representation and gpu programming" (Expand search), "coder presentation of gpu programming" (Expand search), "coder presentation and goal programming" (Expand search), "coder presentation and _ programming" (Expand search), "coder presentation and and programming" (Expand search), "coder presentation and gps programming" (Expand search)
"python coding python python programming" » "action coding python python programming" (Expand search), "python code python python programming" (Expand search), "python codigo python python programming" (Expand search), "python codigos python python programming" (Expand search), "python using python python programming" (Expand search), "python coding pythons python programming" (Expand search), "python coding piton python programming" (Expand search), "python coding pitons 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 presentation and gpu programming") OR ("python coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder presentation and gpu programming\") OR (\"python coding python python programming\"))".
• Removing quotes may allow a broader search: (( coder presentation and gpu programming ) OR ( python coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder presentation and gpu programming") OR ("python coding python python programming"))*.