Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"dao vung java slippers" » "dao vung va slippers", "dan vung java slippers", "dao cuong java slippers", "dao van java slippers", "dao vung java slippery", "dao vung 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: (((("dao vung java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao vung java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao vung java slippers ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao vung java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.