Perhaps you should try some spelling variations:
"tung dan code snippets" » "tung dan de snippets", "dung dan code snippets", "huong dan code snippets", "trung dai code snippets", "tung dan code slippers"
"dung ha code snippets" » "dung va code snippets", "dung he code snippets", "dung khoa code snippets", "dung ha 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 ha code snippets") or ("tung dan code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung ha code snippets") OR ("tung dan code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung ha code snippets ) or ( tung dan code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung ha code snippets") or ("tung dan code snippets"))) or ("locating bug code snippets"))*.