Perhaps you should try some spelling variations:
"dung cau doi snippets" » "dung chau doi snippets", "dung cu doi snippets", "dung cac doi snippets", "dung cau hoi snippets", "dung cau do snippets", "dung cau noi snippets"
"dung cua code snippets" » "dung luan code snippets", "dung cho code snippets", "dung cua cong snippets", "dung cua co snippets", "dung cfd code 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 cau doi snippets\") OR (\"dung cua code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung cau doi snippets ) OR ( dung cua code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung cau doi snippets") OR ("dung cua code snippets"))) OR ("locating bug code snippets"))*.