Perhaps you should try some spelling variations:
"dung nguoi java snippets" » "dung nguon java snippets", "nhung nguoi java snippets", "dung nguoi va snippets", "dung ngu java snippets", "dung nguoi bana snippets", "dung nguoi 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 nguoi 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 nguoi java snippets") OR ("cong hung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung nguoi java snippets ) or ( cong hung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung nguoi java snippets") or ("cong hung code snippets"))) or ("locating bug code snippets"))*.