Perhaps you should try some spelling variations:
"hanh trinh cad snippets" » "canh tranh cad snippets", "hanh chinh cad snippets", "hanh trinh cau snippets", "hanh trinh cac snippets", "hanh trinh cam 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: (((("hanh trinh cad snippets") or ("dung cfd code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh trinh cad snippets") OR ("dung cfd code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh trinh cad snippets ) or ( dung cfd code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh trinh cad snippets") or ("dung cfd code snippets"))) or ("locating bug code snippets"))*.