Perhaps you should try some spelling variations:
"trinh cot hat snippets" » "trinh co hat snippets", "trinh con hat snippets", "trinh iot hat snippets", "trinh cot nhat snippets", "trinh cot phat snippets", "trinh cot chat snippets", "trinh cot hat slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho 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: (((("trinh cot hat snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cot hat snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh cot hat snippets ) or ( dung cho code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cot hat snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))*.