Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"sach doi cao snippets" » "sach hoi cao snippets", "sach moi cao snippets", "sach dao cao snippets", "sach do cao snippets", "sach doi co snippets", "sach doc cao snippets"
"locating bug core snippets" » "locating bug code 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 ("sach doi cao snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( sach doi cao snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("sach doi cao snippets"))) or ("locating bug core snippets"))*.