Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van van duc slippers" » "van ban duc slippers", "tan van duc slippers", "san van duc slippers", "van van duy slippers", "van van du slippers", "van tran duc slippers", "van van duc slippery", "van van duc 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: (((("van van duc slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van van duc slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van van duc slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van van duc slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.