Perhaps you should try some spelling variations:
"dung trung code snippets" » "dung trong code snippets", "quang trung code snippets", "truong trung code snippets", "dung trung co snippets", "dung trung code slippers"
"dung cac trinh snippets" » "dung cac tinh snippets", "dung lap trinh snippets", "dung cac thanh snippets", "luong cac trinh snippets", "dung cho trinh snippets", "dung tai trinh snippets", "dung cac trinh 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 cac trinh snippets") or ("dung trung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cac trinh snippets") OR ("dung trung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cac trinh snippets ) or ( dung trung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cac trinh snippets") or ("dung trung code snippets"))) or ("locating bug code snippets"))*.