Perhaps you should try some spelling variations:
"trinh tran trong snippets" » "trinh trang trong snippets", "trinh toan trong snippets", "trinh tren trong snippets", "trinh gian trong snippets", "trinh quan trong snippets"
"dung cua co snippets" » "dung luan co snippets", "dung cho co snippets", "dung cua bo snippets", "dung cua cong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("trinh tran trong snippets") or ("dung cua co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh tran trong snippets") OR ("dung cua co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh tran trong snippets ) or ( dung cua co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh tran trong snippets") or ("dung cua co snippets"))) or ("locating bug code snippets"))*.