Perhaps you should try some spelling variations:
"dong danh het slippers" » "dong doanh het slippers", "dong anh het slippers", "cong danh het slippers", "dong danh viet slippers", "dong danh hieu slippers", "dong danh bat slippers", "dong danh het slippery", "dong danh het 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"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dong danh het slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong danh het slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong danh het slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong danh het slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.