Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung so sinh slippers" » "dung co sinh slippers", "dung mo sinh slippers", "dung cho sinh slippers", "dung so sanh slippers", "dung so tinh slippers", "dung so sinh slippery", "dung so sinh 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 so sinh 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 so sinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung so sinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung so sinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.