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