Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"tran tao quoc snippets" » "tran tan quoc snippets", "tan tao quoc snippets", "tran tro quoc snippets", "tran tao duoc snippets", "tran cao quoc snippets", "tran tai quoc 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 tao quoc snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( tran tao quoc snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("tran tao quoc snippets"))) or ("locating bug core snippets"))*.