Perhaps you should try some spelling variations:
"dung cong java snippets" » "dung trong java snippets", "dung cong va snippets", "dung cong java slippers"
"van dung code snippets" » "van dung co snippets", "van dung de snippets", "van dung con snippets", "van dong code snippets", "xay dung code snippets", "tin dung code snippets", "van dung 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 ("van dung 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 ("van dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cong java snippets ) or ( van dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cong java snippets") or ("van dung code snippets"))) or ("locating bug code snippets"))*.