Perhaps you should try some spelling variations:
"dung luan code snippets" » "dung luan cong snippets", "dung luan che snippets", "dung luan de snippets", "dung luan code slippers"
"chan doan code snippets" » "phan doan code snippets", "can doan code snippets", "nhan doan code snippets", "chan doanh code snippets", "chan dan code snippets", "chan toan code snippets", "chan doan 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: "((((\"chan doan code snippets\") OR (\"dung luan code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( chan doan code snippets ) OR ( dung luan code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("chan doan code snippets") OR ("dung luan code snippets"))) OR ("locating bug code snippets"))*.