Perhaps you should try some spelling variations:
"dung khoa code snippets" » "dung cho code snippets", "dung khoa cong snippets", "dung khoa co snippets", "dung khoa de snippets", "dung khoa code slippers"
"can thi code snippets" » "can thi cong snippets", "can thi hoe snippets", "cau thi code snippets", "dan thi code snippets", "van thi code snippets", "can thi 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: (((("can thi code snippets") or ("dung khoa code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can thi code snippets") OR ("dung khoa code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can thi code snippets ) or ( dung khoa code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can thi code snippets") or ("dung khoa code snippets"))) or ("locating bug code snippets"))*.