Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"dung chau do snippets" » "dung chat do snippets", "dung cau do snippets", "dung cho do snippets", "dung chau doc snippets", "dung chau tho 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 chau do 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 chau do snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung chau do snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung chau do snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.