Perhaps you should try some spelling variations:
"giang toan trac slippers" » "giang tan trac slippers", "giang van trac slippers", "giang son trac slippers", "giang toan tran slippers", "giang thoan tran slippers", "giang toan tap slippers", "giang toan trac slippery", "giang toan trac 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 ("giang toan trac slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("giang toan trac slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( giang toan trac slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("giang toan trac slippers"))) or ("locating bug code snippets"))*.