Perhaps you should try some spelling variations:
"trinh chat he snippets" » "tinh chat he snippets", "trinh luat he snippets", "trinh han he snippets", "trinh chat huu snippets", "trinh chat deo snippets", "trinh chat hoa 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 chat he snippets\") OR (\"dung cac code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( trinh chat he snippets ) OR ( dung cac code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("trinh chat he snippets") OR ("dung cac code snippets"))) OR ("locating bug code snippets"))*.