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