Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dan chat co snippets" » "van chat co snippets", "dan chan co snippets", "ban chat co snippets", "dan thuat co snippets", "dan chat cua snippets", "dan chat deo 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 java java snippets") or ("dan chat co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dan chat co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dan chat co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dan chat co snippets"))) or ("locating bug code snippets"))*.