Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"locating bug core snippets" » "locating bug code snippets"
"van duc cac snippets" » "van duy cac snippets", "van du cac snippets", "tran duc cac snippets", "van duoc cac snippets", "van tuc cac snippets", "van muc cac 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 ("van duc cac snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( van duc cac snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("van duc cac snippets"))) or ("locating bug core snippets"))*.