Perhaps you should try some spelling variations:
"dang viet trong slippers" » "dang viet trung slippers", "dang viet thong slippers", "dang viet huong slippers", "nang viet trong slippers", "danh viet trong slippers", "mang viet trong slippers", "dang viet trong slippery", "dang viet 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 viet 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 viet trong slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang viet trong slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang viet trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.