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