Perhaps you should try some spelling variations:
"trinh quanh cac snippets" » "trinh quan cac snippets", "trinh quang cac snippets", "tinh quang cac snippets", "trinh quang cao snippets", "trinh qua cac snippets", "trinh quan cau snippets"
"dung bug code snippets" » "dung dung code snippets", "dung hung code snippets", "dung rung code snippets", "dung bug core snippets"
"locating bug code snippets" » "locating bug core 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 bug code snippets\") OR (\"trinh quanh cac snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung bug code snippets ) OR ( trinh quanh cac snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung bug code snippets") OR ("trinh quanh cac snippets"))) OR ("locating bug code snippets"))*.