Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"lang con chi snippets" » "lang son chi snippets", "lang co chi snippets", "yang con chi snippets", "lang con chim snippets", "lang cong chi snippets", "lang can chi 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 ("lang con chi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("lang con chi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( lang con chi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("lang con chi snippets"))) or ("locating bug code snippets"))*.