Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"viet nhan dan snippets" » "viet phan dan snippets", "vien nhan dan snippets", "viet han dan snippets", "viet phan dau snippets", "viet gian dan snippets", "viet nhan tai 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: (((("using java java snippets") OR ("viet nhan dan snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java java snippets ) or ( viet nhan dan snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") or ("viet nhan dan snippets"))) or ("locating bug core snippets"))*.