Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"tran tung doc snippets" » "tran hung doc snippets", "tran dung doc snippets", "tran quang doc snippets", "tran tung do snippets", "tran vung doc snippets", "tran trung duoc 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 tung doc snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( tran tung doc snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("tran tung doc snippets"))) or ("locating bug core snippets"))*.