Perhaps you should try some spelling variations:
"tran hoang cong snippets" » "quan hoang cong snippets", "tran quang cong snippets", "tranh hang cong snippets", "tran hang cong snippets", "tran hoang long snippets", "tran hoang vuong snippets"
"dung dat code snippets" » "dung va code snippets", "dung tai code snippets", "dung rate code snippets", "dung dat de 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran hoang cong snippets") OR ("dung dat code snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( tran hoang cong snippets ) or ( dung dat code snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("tran hoang cong snippets") or ("dung dat code snippets"))) or ("locating bug code snippets"))*.