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