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