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