Perhaps you should try some spelling variations:
"doan tuan trinh snippets" » "doan xuan trinh snippets", "doan thanh trinh snippets", "doan thuat trinh snippets", "doan quan trinh snippets", "doanh luan trinh snippets", "doan quang trinh snippets", "doan tuan trinh slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("doan tuan trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan tuan trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan tuan trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan tuan trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.