Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"data using java snippets" » "data using data snippets"
"dung dat viet snippets" » "dung va viet snippets", "dung tai viet snippets", "dung dao viet snippets", "dung da viet snippets", "dung dai viet snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung dat viet snippets") OR ("data using java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( dung dat viet snippets ) or ( data using java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung dat viet snippets") or ("data using java snippets"))) or ("locating bug core snippets"))*.