Perhaps you should try some spelling variations:
"dung ung java snippets" » "dung trung java snippets", "dung quang java snippets", "dung chung java snippets", "dung using java snippets", "dung ngu java snippets", "dung ung va snippets", "dung ung java slippers"
"van hac code snippets" » "van hac de snippets", "van hoc code snippets", "van ha code snippets", "van hai code snippets", "van hac 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 ung java snippets") or ("van hac code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ung java snippets") OR ("van hac code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ung java snippets ) or ( van hac code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ung java snippets") or ("van hac code snippets"))) or ("locating bug code snippets"))*.