Perhaps you should try some spelling variations:
"dung cnnhuong code snippets" » "dung chung code snippets", "dung thuong code snippets", "dung phuong code snippets", "dung cnnhuong core snippets", "dung cnnhuong code slippers"
"hung v code snippets" » "hung v core snippets", "hung v code slippers", "huong v code snippets", "nhung v code snippets", "chung v code snippets"
"locating bug code snippets" » "locating bug core 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 cnnhuong code snippets") or ("hung v code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cnnhuong code snippets") OR ("hung v code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cnnhuong code snippets ) or ( hung v code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cnnhuong code snippets") or ("hung v code snippets"))) or ("locating bug code snippets"))*.