Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"cac hoi dan snippets" » "cac thoi dan snippets", "cac khoi dan snippets", "cau hoi dan snippets", "cac hoa dan snippets", "cac hoc dan snippets", "cac hoi dap 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 code snippets") OR ("cac hoi dan snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( cac hoi dan snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("cac hoi dan snippets"))) or ("locating bug core snippets"))*.