Perhaps you should try some spelling variations:
"dang duc trong slippers" » "dang duc truong slippers", "dang duoc trong slippers", "dang duc trung slippers", "dang quoc trong slippers", "dao duc trong slippers", "dang su trong slippers", "dang duc trong slippery", "dang duc trong 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: (((("dang duc trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang duc trong slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang duc trong slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang duc trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.