Perhaps you should try some spelling variations:
"dung mat co snippets" » "duong mat co snippets", "dung dat co snippets", "dung may co snippets", "dung vat co snippets", "dung mot co snippets"
"tran thi code snippets" » "tran thi cong snippets", "tran thi hoe snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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

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