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