Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung li cac snippets" » "dung lai cac snippets", "dung vi cac snippets", "dung le cac snippets", "dung li ca snippets", "dung ly cac snippets", "dung loi cach 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 li cac 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 li cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung li cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung li cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.