Perhaps you should try some spelling variations:
"cong trinh cad snippets" » "cong trinh cau snippets", "cong trinh cac snippets", "cong trinh cam snippets"
"dung hon dat snippets" » "dung hong dat snippets", "dung hoc dat snippets", "dung con dat snippets", "dung chon dat snippets", "dung hoi dat snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

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