Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"dan so danh snippets" » "dan do danh snippets", "dan so sanh snippets", "dan so dan snippets", "dan soc danh snippets", "dan su danh snippets", "dan mo danh 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 ("dan so danh snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dan so danh snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dan so danh snippets"))) or ("locating bug core snippets"))*.