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