Mainland China, Macau and Hongkong visa for Vietnamese passport living in Netherlands

Dear, entry permits for PRC, Macau and HK are different, so you need to prepare three applications. If you come for tourism purpose, you need to apply for tourist L type to PRC, and a visit entry permit to Macau and HK respectively. The basic documents including the application form attached with a recently-taken bareheaded color photo, your passport and copy of its data page, your legal residence permit in Netherlands. Other required documents are a little bit different.
For PRC: round trip air tickets and accommodation reservation.
For Macau: document of financial status, document of transportation to Macau and accommodation arrangement such as round-trip air ticket and hotel reservation receipts, proof of purpose of visit.
For HK: proof of financial support, flight itinerary, and travel plan to HK
Afterwards, submit your application to the embassy of PRC in Netherlands and wait for the result.