Perhaps you should try some spelling variations:
"dung trinh dan slippers" » "dung tinh dan slippers", "dong trinh dan slippers", "cong trinh dan slippers", "dung trinh han slippers", "dung trinh van slippers", "dung trinh san slippers", "dung trinh dan slippery", "dung trinh dan 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 trinh dan 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 trinh dan slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung trinh dan slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung trinh dan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.