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