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