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