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