Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"2013 van tin snippets" » "2013 va tin snippets", "2013 nam tin snippets", "2013 van tien snippets", "2013 van tan snippets", "2013 van thinh snippets", "2013 van tin slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("2013 van tin snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("2013 van tin snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( 2013 van tin snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("2013 van tin snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.