Perhaps you should try some spelling variations:
"dung danh may slippers" » "dung doanh may slippers", "dung dan may slippers", "dung dang may slippers", "dung hanh may slippers", "dung mang may slippers", "dung danh bat slippers", "dung danh may slippery", "dung danh may 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 danh may 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 danh may slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung danh may slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung danh may slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.