Perhaps you should try some spelling variations:
"trinh cad model snippets" » "trinh cau model snippets", "trinh cac model snippets", "trinh cam model snippets", "trinh a model snippets"
"dung lua doi snippets" » "dung luan doi snippets", "dung luat doi snippets", "dung cua doi snippets", "dung sua doi snippets", "dung quan doi snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 cad model snippets") or ("dung lua doi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cad model snippets") OR ("dung lua doi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh cad model snippets ) or ( dung lua doi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cad model snippets") or ("dung lua doi snippets"))) or ("locating bug code snippets"))*.