Perhaps you should try some spelling variations:
"trinh cua co snippets" » "tinh cua co snippets", "trinh luat co snippets", "trinh quan co snippets", "trinh cua bo snippets", "trinh cua cong snippets"
"dung cua code snippets" » "dung luan code snippets", "dung cho code snippets", "dung cua cong snippets", "dung cfd code snippets", "dung cua che snippets", "dung cua bode snippets", "dung cua congde snippets"
"locating bug code 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: (((("trinh cua co snippets") or ("dung cua code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cua co snippets") OR ("dung cua code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh cua co snippets ) or ( dung cua code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cua co snippets") or ("dung cua code snippets"))) or ("locating bug code snippets"))*.