Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"tran mach can snippets" » "tran manh can snippets", "trinh mach can snippets", "trong mach can snippets", "tran mach cao snippets", "tran mach phan snippets", "tran mach tuan 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 ("tran mach can snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( tran mach can snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("tran mach can snippets"))) or ("locating bug core snippets"))*.