Perhaps you should try some spelling variations:
"dung chung code snippets" » "dung cong code snippets", "dung trung code snippets", "truong chung code snippets", "dung chung co snippets", "dung chung code slippers"
"trinh cau tang snippets" » "trinh chat tang snippets", "trinh chao tang snippets", "trinh tu tang snippets", "trinh cau thang snippets", "trinh cao tang snippets", "trinh ca tang snippets", "trinh cau tang 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: (((("trinh cau tang snippets") or ("dung chung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cau tang snippets") OR ("dung chung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh cau tang snippets ) or ( dung chung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cau tang snippets") or ("dung chung code snippets"))) or ("locating bug code snippets"))*.