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