Perhaps you should try some spelling variations:
"using hat nhan slippers" » "using sat nhan slippers", "using data nhan slippers", "using half nhan slippers", "using ca nhan slippers", "using van nhan slippers", "using ban nhan slippers", "using hat nhan slippery", "using hat nhan grippers"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using hat nhan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using hat nhan slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using hat nhan slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using hat nhan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.