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", "dung dung code slippers"
"dung tin trinh snippets" » "dung tien trinh snippets", "dung dinh trinh snippets", "dung sinh trinh snippets", "dong tin trinh snippets", "luong tin trinh snippets", "dung tren trinh snippets", "dung tin trinh slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung dung code snippets\") OR (\"dung tin trinh snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung dung code snippets ) OR ( dung tin trinh snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung dung code snippets") OR ("dung tin trinh snippets"))) OR ("locating bug code snippets"))*.