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", "trinh tran trong slippers"
"dung co code snippets" » "dung cho code snippets", "dung cong code snippets", "dung cua code snippets", "dung cfd code snippets", "dung co 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 tran trong snippets") or ("dung co code 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 co code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh tran trong snippets ) or ( dung co code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh tran trong snippets") or ("dung co code snippets"))) or ("locating bug code snippets"))*.