Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"cong dan mach snippets" » "cong san mach snippets", "cong tan mach snippets", "huong dan mach snippets", "cong ban mach snippets", "cong dan cach snippets", "cong ranh mach 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 dan mach snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( cong dan mach snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("cong dan mach snippets"))) or ("locating bug core snippets"))*.