Perhaps you should try some spelling variations:
"dung datng code snippets" » "dung dang code snippets", "dung dat code snippets", "dung dan code snippets", "dung datng code slippers"
"huong cau code snippets" » "thuong chau code snippets", "huong dan code snippets", "huong cua code snippets", "huong cau cong snippets", "huong cau de snippets", "huong cfd code snippets", "huong cau code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 datng code snippets") or ("huong cau code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung datng code snippets") OR ("huong cau code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung datng code snippets ) or ( huong cau code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung datng code snippets") or ("huong cau code snippets"))) or ("locating bug code snippets"))*.