Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"dong cheng lu snippets" » "dong chen lu snippets", "dong chung lu snippets", "cong chieng lu snippets", "dong cheng lin snippets", "dong zheng liu snippets", "dong chen yu 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 ("dong cheng lu snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dong cheng lu snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dong cheng lu snippets"))) or ("locating bug core snippets"))*.