Perhaps you should try some spelling variations:
"trinh cau cong snippets" » "trinh chat cong snippets", "trinh chao cong snippets", "trinh tu cong snippets", "trinh cac cong snippets", "trinh cuu cong snippets", "trinh cao cong snippets"
"mang lam code snippets" » "bang lam code snippets", "mang lai code snippets", "mang mam code snippets", "mang lbm code snippets", "mang lam co snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cau cong snippets") OR ("mang lam code snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( trinh cau cong snippets ) or ( mang lam code snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("trinh cau cong snippets") or ("mang lam code snippets"))) or ("locating bug code snippets"))*.