Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong phap chat snippets" » "dong pha chat snippets", "dong phan chat snippets", "dong thap chat snippets", "dong phap phat snippets", "dong phap luat snippets", "dong phap phan 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 ("dong phap chat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("dong phap chat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( dong phap chat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("dong phap chat snippets"))) or ("locating bug code snippets"))*.