Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"phan cac den snippets" » "nhan cach den snippets", "phan dau den snippets", "phan lap den snippets", "phan cac dan snippets", "phan cac don snippets", "phan cac nen 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: (((("phan cac den snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan cac den snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan cac den snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan cac den snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.