Perhaps you should try some spelling variations:
"using data duoc slippers" » "using java duoc slippers", "using sat duoc slippers", "missing data duoc slippers", "using dat duoc slippers", "using dat nuoc slippers", "using da duoc slippers", "using data duoc slippery", "using data duoc 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: (((("dung java java snippets") or ("using data duoc slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("using data duoc slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( using data duoc slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("using data duoc slippers"))) or ("locating bug code snippets"))*.