Perhaps you should try some spelling variations:
"dung cacfd code snippets" » "dung cac code snippets", "dung cfd code snippets"
"dung cao chat snippets" » "duong cao chat snippets", "dung cho chat snippets", "dung co chat 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.

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