Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung tri my slippers" » "dung tai my slippers", "dung tren my slippers", "nhung tri my slippers", "dung thi my slippers", "dung tra my slippers", "dung tri my slippery", "dung tri my 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: (((("dung tri my 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 tri my slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tri my slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tri my slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.