Perhaps you should try some spelling variations:
"dung data phan slippers" » "dung dat phan slippers", "dung dan phan slippers", "dung dau phan slippers", "dung dam phan slippers", "dung sat phan slippers", "dung vat phan slippers", "dung data phan slippery", "dung data phan 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 data phan 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 data phan slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung data phan slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung data phan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.