Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cua hoc chat snippets" » "cua hoc phat snippets", "cua hoc cao snippets", "cua hoc phan snippets", "cua hoi chat snippets", "cua thuoc chat snippets", "cua nuoc chat 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 ("cua hoc 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 ("cua hoc chat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cua hoc chat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("cua hoc chat snippets"))) or ("locating bug code snippets"))*.