Perhaps you should try some spelling variations:
"dung ngoc trong slippers" » "dung nuoc trong slippers", "dung goc trong slippers", "dung ngo trong slippers", "duong ngoc trong slippers", "dang ngoc trong slippers", "dung ngoc trong slippery", "dung ngoc trong 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 ngoc trong 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 ngoc trong slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ngoc trong slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ngoc trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.