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