Perhaps you should try some spelling variations:
"trinh phan lua snippets" » "trinh han lua snippets", "trinh quan lua snippets", "thanh phan lua snippets", "trinh phap lua snippets", "trinh phan dua snippets", "trinh phap luat snippets", "trinh phan lua slippers"
"dung nhan code snippets" » "dung luan code snippets", "dung nhan co snippets", "dung nhan con snippets", "dung nhan code slippers"
"locating bug code snippets" » "locating bug code slippers", "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 lua snippets\") OR (\"dung nhan code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( trinh phan lua snippets ) OR ( dung nhan code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("trinh phan lua snippets") OR ("dung nhan code snippets"))) OR ("locating bug code snippets"))*.