Perhaps you should try some spelling variations:
"dung cacfd code slippers" » "dung cac code slippers", "dung cfd code slippers"
"tran van code snippets" » "luan van code snippets", "tran van de snippets", "tran van hoe snippets", "tran van cong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran van code snippets") OR ("dung cacfd code slippers"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( tran van code snippets ) or ( dung cacfd code slippers ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("tran van code snippets") or ("dung cacfd code slippers"))) or ("locating bug code snippets"))*.