Perhaps you should try some spelling variations:
"tran dong va slippers" » "tran dang va slippers", "tran hong va slippers", "tran dung va slippers", "tran dong ha slippers", "tran luong va slippers", "tran dong va slippery", "tran dong va 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: (((("tran dong va slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran dong va slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( tran dong va slippers ) or ( dung java java snippets ))) or ( locating bug code snippets ))*.