Perhaps you should try some spelling variations:
"trinh co code snippets" » "trinh do code snippets", "trinh cong code snippets", "trinh hoa code snippets", "trinh cfd code snippets", "trinh co code slippers"
"nang thi code snippets" » "dang thi code snippets", "tang thi code snippets", "nang tai code snippets", "nang thi cong snippets", "nang thi hoe snippets", "nang thi code slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("trinh co code snippets") or ("nang thi code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh co code snippets") OR ("nang thi code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh co code snippets ) or ( nang thi code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh co code snippets") or ("nang thi code snippets"))) or ("locating bug code snippets"))*.