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