Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hang java java snippets" » "hang va java snippets"
"cong dan thin snippets" » "cong san thin snippets", "cong tan thin snippets", "huong dan thin snippets", "cong danh thin snippets", "cong dan thi snippets", "cong dan than 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: (((("hang java java snippets") OR ("cong dan thin snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( hang java java snippets ) or ( cong dan thin snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("hang java java snippets") or ("cong dan thin snippets"))) or ("locating bug core snippets"))*.