Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung le hoc snippets" » "dung len hoc snippets", "dung he hoc snippets", "dung de hoc snippets", "dung li hoc snippets", "dung ly hoc snippets", "dung le hoi snippets"
"locating bug code snippets" » "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: (((("dung le hoc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung le hoc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung le hoc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung le hoc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.