Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"cong trinh cad snippets" » "cong trinh cau snippets", "cong trinh cac snippets", "cong trinh cam snippets"
"dung viet code snippets" » "nang viet code snippets", "cong viet code snippets", "mang viet code snippets", "dung viet co snippets", "dung viet some 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: (((("cong trinh cad snippets") or ("dung viet code snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong trinh cad snippets") OR ("dung viet code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( cong trinh cad snippets ) or ( dung viet code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong trinh cad snippets") or ("dung viet code snippets"))) or ("locating bugs code snippets"))*.