Perhaps you should try some spelling variations:
"dung quang dat snippets" » "dang quang dat snippets", "luong quang dat snippets", "dung luan dat snippets", "dung quang dai snippets", "dung quang dam snippets", "dung quang phat snippets", "dung quang dat slippers"
"trinh cac code snippets" » "trinh cau code snippets", "trinh chat code snippets", "trinh chao code snippets", "trinh cac cong snippets", "trinh cac co snippets", "trinh cac che snippets", "trinh cac 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 cac code snippets") or ("dung quang dat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh cac code snippets") OR ("dung quang dat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh cac code snippets ) or ( dung quang dat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh cac code snippets") or ("dung quang dat snippets"))) or ("locating bug code snippets"))*.