Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi toan va slippers" » "boi toan va slippers", "doi tan va slippers", "doi doanh va slippers", "doi doan va slippers", "doi tran van slippers", "doi toan ban slippers", "doi toan va slippery", "doi toan va 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: (((("doi toan va slippers") OR ("python using java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( doi toan va slippers ) or ( python using java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doi toan va slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.