Perhaps you should try some spelling variations:
"dung chung code snippets" » "dung chung co snippets", "dung cong code snippets", "dung trung code snippets", "truong chung code snippets", "dung chung code slippers"
"chan doan code snippets" » "phan doan code snippets", "can doan code snippets", "nhan doan code snippets", "chan doanh code snippets", "chan dan code snippets", "chan toan code snippets", "chan doan 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: (((("chan doan code snippets") or ("dung chung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chan doan code snippets") OR ("dung chung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chan doan code snippets ) or ( dung chung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chan doan code snippets") or ("dung chung code snippets"))) or ("locating bug code snippets"))*.