Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"cong cua map snippets" » "cong cu map snippets", "dong cua map snippets", "huong cua map snippets", "cong cua tap snippets", "cong chua may snippets", "cong cua phap 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 ("cong cua map snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( cong cua map snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("cong cua map snippets"))) or ("locating bug core snippets"))*.