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