Perhaps you should try some spelling variations:
"locating bugs code slippers" » "locating bug code slippers", "locating bugs code snippets"
"using java java snippets" » "using data java snippets"
"duc dung java snippets" » "duc dung va snippets", "duc hung java snippets", "duc cuong java snippets", "duc phung java snippets"

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

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