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