Perhaps you should try some spelling variations:
"dung vinh anh slippers" » "dang vinh anh slippers", "dung ninh anh slippers", "quang vinh anh slippers", "dung hinh anh slippers", "dung minh anh slippers", "dung minh danh slippers", "dung vinh anh slippery", "dung vinh anh 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 vinh anh 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 vinh anh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vinh anh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vinh anh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.