Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong su tran slippers" » "dang su tran slippers", "dong tu tran slippers", "dong luc tran slippers", "dong su trung slippers", "dong su thanh slippers", "dong huy tran slippers", "dong su tran slippery", "dong su tran 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 su tran 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 su tran slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong su tran slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong su tran slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.