Perhaps you should try some spelling variations:
"trinh toan lich snippets" » "tinh toan lich snippets", "thanh toan lich snippets", "trinh han lich snippets", "trinh toan kinh snippets", "trinh hoa lich snippets", "trinh tran linh snippets", "trinh toan lich 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh toan lich snippets") or ("dung dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh toan lich snippets") OR ("dung dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh toan lich snippets ) or ( dung dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh toan lich snippets") or ("dung dung code snippets"))) or ("locating bug code snippets"))*.