Perhaps you should try some spelling variations:
"trinh anh trac snippets" » "trinh hanh trac snippets", "trinh thanh trac snippets", "trinh kinh trac snippets", "trinh sinh trac snippets", "trinh anh tuan snippets", "trinh anh thuc snippets", "trinh anh trac slippers"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets", "dung dung 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 anh trac snippets\") OR (\"dung dung code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( trinh anh trac snippets ) OR ( dung dung code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("trinh anh trac snippets") OR ("dung dung code snippets"))) OR ("locating bug code snippets"))*.