Perhaps you should try some spelling variations:
"trinh tran hung snippets" » "trinh trang hung snippets", "trinh toan hung snippets", "trinh tren hung snippets", "trinh tran hong snippets", "trinh tran quang snippets", "trinh tran hoang snippets", "trinh tran hung slippers"
"dung cho code snippets" » "dung cho cong snippets", "dung cfd code snippets", "dung cho con snippets", "dung cho 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 hung snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh tran hung snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh tran hung snippets ) or ( dung cho code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh tran hung snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))*.