Perhaps you should try some spelling variations:
"trong phan duc slippers" » "truong phan duc slippers", "trong phat duc slippers", "thong phan duc slippers", "trong pham duc slippers", "trong phan tu slippers", "trong phan dau slippers", "trong phan duc slippery", "trong phan duc 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 java java snippets") or ("trong phan duc slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trong phan duc slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trong phan duc slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trong phan duc slippers"))) or ("locating bug code snippets"))*.