Perhaps you should try some spelling variations:
"dung hai giang slippers" » "dung bai giang slippers", "dung ha giang slippers", "dung hau giang slippers", "dung tai giang slippers", "dung sai giang slippers", "dung hai giang slippery", "dung hai giang 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"

Try widening your search to All Fields.

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

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