Perhaps you should try some spelling variations:
"nang nghe java slippers" » "lang nghe java slippers", "cong nghe java slippers", "van nghe java slippers", "nang nghe va slippers", "nang ngu java slippers", "nang nghe java slippery", "nang nghe java grippers"
"dung java java snippets" » "dung va java snippets"
"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: (((("nang nghe 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: (((("nang nghe java slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang nghe java slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang nghe java slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.