Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"trinh dan toan snippets" » "trinh han toan snippets", "trinh van toan snippets", "trinh san toan snippets", "trinh dan than snippets", "trinh manh toan snippets"
"dung cfd code snippets" » "dung cho code snippets", "dung cua code snippets", "dung co 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 dan toan snippets") or ("dung cfd code snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh dan toan snippets") OR ("dung cfd code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( trinh dan toan snippets ) or ( dung cfd code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh dan toan snippets") or ("dung cfd code snippets"))) or ("locating bugs code snippets"))*.