Perhaps you should try some spelling variations:
"using java code slippers" » "using data code slippers"
"trinh he manh snippets" » "trinh han manh snippets", "trinh hoa manh snippets", "trinh ky manh snippets", "trinh ho manh snippets", "trinh le manh snippets", "trinh ha manh snippets"
"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 code slippers") OR ("trinh he manh snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( using java code slippers ) or ( trinh he manh snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code slippers") or ("trinh he manh snippets"))) or ("locating bug code snippets"))*.