Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"doan vi lua slippers" » "doan va lua slippers", "don vi lua slippers", "doan thi lua slippers", "doan vi luu slippers", "doan vi lua 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan vi lua slippers") OR ("python using java slippery"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( doan vi lua slippers ) or ( python using java slippery ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doan vi lua slippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.