Perhaps you should try some spelling variations:
"dong trinh trong snippets" » "dong trinh truong snippets", "dong tranh trong snippets", "dong trinh trung snippets", "cong trinh trong snippets", "dong tinh trong snippets", "dong trinh trong slippers"
"dung cfd code snippets" » "dung cho code snippets", "dung cua code snippets", "dung co code snippets", "dung cfd code slippers", "dung cfd core snippets"
"locating bug code snippets" » "locating bug code slippers", "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.

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