Perhaps you should try some spelling variations:
"trinh cau hat slippers" » "trinh chat hat slippers", "trinh chao hat slippers", "trinh tu hat slippers", "trinh cao chat slippers", "trinh cuu phat slippers", "trinh cau hat slippery", "trinh cau hat grippers"
"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"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cau hat slippers") OR ("dung cfd code snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( trinh cau hat slippers ) or ( dung cfd code snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("trinh cau hat slippers") or ("dung cfd code snippets"))) or ("locating bug code snippets"))*.