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