Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dan nam de snippets" » "van nam de snippets", "dong nam de snippets", "dinh nam de snippets", "dan nam da snippets", "dan nam do snippets", "dan nam he 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: (((("dan nam de snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan nam de snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan nam de snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan nam de snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.