Perhaps you should try some spelling variations:
"dung anh tranh snippets" » "dung canh tranh snippets", "dung lanh tranh snippets", "dung anh thanh snippets", "dung danh tranh snippets", "duong anh tranh snippets", "dong anh tranh snippets", "dung anh tranh 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: (((("dung anh tranh snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung anh tranh snippets") OR ("dung cho code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung anh tranh snippets ) or ( dung cho code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung anh tranh snippets") or ("dung cho code snippets"))) or ("locating bug code snippets"))*.