Perhaps you should try some spelling variations:
"using java tu snippets" » "using data tu snippets"
"dung chung code slippers" » "dung cong code slippers", "dung trung code slippers", "truong chung code slippers", "dung chung co slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs 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 tu snippets") OR ("dung chung code slippers"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( using java tu snippets ) or ( dung chung code slippers ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java tu snippets") or ("dung chung code slippers"))) or ("locating bug code snippets"))*.