Perhaps you should try some spelling variations:
"trinh toan danh snippets" » "tinh toan danh snippets", "thanh toan danh snippets", "trinh han danh snippets", "trinh toan doanh snippets", "trinh toan anh snippets", "trinh toan hanh snippets", "trinh toan danh slippers"
"dung rate code snippets" » "dung dat code snippets", "dung vat code snippets", "dung mat code snippets", "dung rate code slippers", "dung rate core snippets"
"locating bug code snippets" » "locating bug code slippers", "locating bug core snippets", "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 danh snippets") or ("dung rate code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh toan danh snippets") OR ("dung rate code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh toan danh snippets ) or ( dung rate code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh toan danh snippets") or ("dung rate code snippets"))) or ("locating bug code snippets"))*.