Perhaps you should try some spelling variations:
"trong thuc hat slippers" » "trong thu hat slippers", "thuong thuc hat slippers", "trong thuat hat slippers", "trong thuc hoat slippers", "trong thuc vat slippers", "trong khuc hat slippers", "trong thuc hat slippery", "trong thuc hat 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 thuc hat 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 thuc hat slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trong thuc hat slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trong thuc hat slippers"))) or ("locating bug code snippets"))*.