Perhaps you should try some spelling variations:
"dung trinh tu snippets" » "dung tinh tu snippets", "dong trinh tu snippets", "cong trinh tu snippets", "dung trinh ky snippets", "dung trinh do snippets", "dung trinh tu slippers"
"dung vung code snippets" » "dung ung code snippets", "dung dung code snippets", "dung hung code snippets", "dung vung co snippets", "dung vung 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 vung code snippets") or ("dung trinh tu snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vung code snippets") OR ("dung trinh tu snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vung code snippets ) or ( dung trinh tu snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vung code snippets") or ("dung trinh tu snippets"))) or ("locating bug code snippets"))*.