Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dung cua doi snippets" » "dung luan doi snippets", "dung cho doi snippets", "dung sua doi snippets", "dung cua dai snippets", "dung cua hoi 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: (((("dung cua doi snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cua doi snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cua doi snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cua doi snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.