Perhaps you should try some spelling variations:
"trinh cap den snippets" » "trinh cau den snippets", "trinh lap den snippets", "trinh cac den snippets", "trinh cap dien snippets", "trinh chap dien snippets"
"dung cac code snippets" » "luong cac code snippets", "dung cho code snippets", "dung tai code snippets", "dung cac cong snippets", "dung cac co snippets", "dung cac che 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 cac code snippets\") OR (\"trinh cap den snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung cac code snippets ) OR ( trinh cap den snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung cac code snippets") OR ("trinh cap den snippets"))) OR ("locating bug code snippets"))*.