Perhaps you should try some spelling variations:
"dung mot trong slippers" » "dung dot trong slippers", "dung mat trong slippers", "dung mot tuong slippers", "dung mo trong slippers", "dung co trong slippers", "dung dat trong slippers", "dung mot trong slippery", "dung mot 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 mot 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 mot trong slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung mot trong slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung mot trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.