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