Perhaps you should try some spelling variations:
"trinh phan doi snippets" » "trinh han doi snippets", "trinh quan doi snippets", "thanh phan doi snippets", "trinh phan dai snippets", "trinh pham doi snippets", "trinh phan do 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: "((((\"trinh phan doi snippets\") OR (\"dung cac code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( trinh phan doi snippets ) OR ( dung cac code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("trinh phan doi snippets") OR ("dung cac code snippets"))) OR ("locating bug code snippets"))*.