Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"dan ngu java slippers" » "dan ngu va slippers", "han ngu java slippers", "dan ngan java slippers", "den nguy java slippers", "dan ngu java slippery", "dan ngu 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: (((("dan ngu 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: (((("dan ngu java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan ngu java slippers ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan ngu java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.