Perhaps you should try some spelling variations:
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets"
"tran tung code slippers" » "tran hung code slippers", "tran dung code slippers", "tran quang code slippers"
"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: (((("dung dung code snippets") OR ("tran tung code slippers"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( dung dung code snippets ) or ( tran tung code slippers ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung dung code snippets") or ("tran tung code slippers"))) or ("locating bug code snippets"))*.