The publisher Baidu offers the following match types

• Exact
• Broad
• Phrase (with the follow sub-phrase match types)
  
  • Phrase-synonym
  • Phrase-core
  • Phrase-exact

Note: Currently, Marin do not support sub-phrase match types. When creating a Baidu keyword with Phrase match type, it will default to Phrase-synonym.

Negative Keyword Match Types

Baidu supports the following match types for Negative Keywords:

• Exact: Supported at both Campaign and Group level
• Phrase: Supported at both Campaign and Group level

Additional Information

For further information, please refer to this official Baidu documentation.