Perhaps you should try some spelling variations:
"using python 3 slippers" » "think python 3 slippers", "using python _ slippers", "using python a slippers", "using python 3 slippery"
"dung java java grippers" » "dung va java grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung java java grippers") or ("using python 3 slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java grippers") OR ("using python 3 slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java grippers ) or ( using python 3 slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java grippers") or ("using python 3 slippers"))) or ("locating bug code snippets"))*.