Perhaps you should try some spelling variations:
"trinh phan coc snippets" » "trinh han coc snippets", "trinh quan coc snippets", "thanh phan coc snippets", "trinh phan cac snippets", "trinh phan co snippets", "trinh phap coc snippets"
"dung cfd code snippets" » "dung cho code snippets", "dung cua code snippets", "dung co code snippets", "dung cfd core snippets"
"locating bug code snippets" » "locating bug core snippets", "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 cfd code snippets") or ("trinh phan coc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cfd code snippets") OR ("trinh phan coc snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cfd code snippets ) or ( trinh phan coc snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cfd code snippets") or ("trinh phan coc snippets"))) or ("locating bug code snippets"))*.