Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"rang dung con snippets" » "dang dung con snippets", "rang dong con snippets", "quang dung con snippets", "rang dung cong snippets", "rang dung von snippets", "rang dung co snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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 core snippets") OR ("rang dung con snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( using java core snippets ) or ( rang dung con snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java core snippets") or ("rang dung con snippets"))) or ("locating bug code snippets"))*.