Perhaps you should try some spelling variations:
"dung toan anh slippers" » "dung doanh anh slippers", "dung thang anh slippers", "dung thanh anh slippers", "dung toan hanh slippers", "dung tuan anh slippers", "dung tran anh slippers", "dung toan anh slippery", "dung toan anh 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 toan anh 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 toan anh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung toan anh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung toan anh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.