Perhaps you should try some spelling variations:
"trinh tu code snippets" » "trinh ky code snippets", "trinh do code snippets", "trinh tu code slippers"
"dung con dat snippets" » "dung cong dat snippets", "dung von dat snippets", "dung co dat snippets", "dung chon dat snippets", "dung coc dat snippets", "dung con day snippets", "dung con dat 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 tu code snippets") or ("dung con dat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh tu code snippets") OR ("dung con dat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh tu code snippets ) or ( dung con dat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh tu code snippets") or ("dung con dat snippets"))) or ("locating bug code snippets"))*.