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