Perhaps you should try some spelling variations:
"dung danh phat slippers" » "dung doanh phat slippers", "dung dan phat slippers", "dung dang phat slippers", "dung danh phap slippers", "dung doanh nhat slippers", "dung danh phat slippery", "dung danh phat 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: (((("dung danh phat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung danh phat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung danh phat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung danh phat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.