Perhaps you should try some spelling variations:
"trinh ve code snippets" » "trinh he code snippets", "trinh va code snippets", "trinh vi code snippets", "trinh ve core snippets"
"dung cac chat snippets" » "luong cac chat snippets", "dung cho chat snippets", "dung tai chat snippets", "dung cao chat snippets", "dung cac thuat snippets", "dung cac nha 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: (((("trinh ve code snippets") or ("dung cac chat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh ve code snippets") OR ("dung cac chat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh ve code snippets ) or ( dung cac chat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh ve code snippets") or ("dung cac chat snippets"))) or ("locating bug code snippets"))*.