Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"phan tai hoe snippets" » "pham tai hoe snippets", "nhan tai hoe snippets", "phan thi hoe snippets", "phan tai he snippets", "phan tai khoa snippets", "phan thai hoc 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 tai hoe 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 tai hoe snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan tai hoe snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan tai hoe snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.