Perhaps you should try some spelling variations:
"using java code slippers" » "using data code slippers"
"trinh cua san snippets" » "tinh cua san snippets", "trinh luat san snippets", "trinh quan san snippets", "trinh cua ban snippets", "trinh cua dan snippets", "trinh ca san 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 cua san snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( using java code slippers ) or ( trinh cua san snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code slippers") or ("trinh cua san snippets"))) or ("locating bug code snippets"))*.