UIT-VSFC (version 1.0) - Vietnamese Students’ Feedback Corpus
Students’ feedback is a vital resource for the interdisciplinary research involving the combining of two different research fields between sentiment analysis and education. Vietnamese Students’ Feedback Corpus (UIT-VSFC) is the resource consists of over 16,000 sentences which are human-annotated with two different tasks: sentiment-based and topic-based classifications.

Paper: Kiet Van Nguyen, Vu Duc Nguyen, Phu Xuan-Vinh Nguyen, Tham Thi-Hong Truong, Ngan Luu-Thuy Nguyen, UIT-VSFC: Vietnamese Students' Feedback Corpus for Sentiment Analysis, 2018 10th International Conference on Knowledge and Systems Engineering (KSE 2018), November 1-3, 2018, Ho Chi Minh City, Vietnam. 
https://sites.google.com/uit.edu.vn/uit-nlp/datasets-projects
The UIT NLP Group
A university or research institution
Vietnam
Kiet Van Nguyen
kietnv@uit.edu.vn
https://sites.google.com/uit.edu.vn/uit-nlp/datasets-projects
Yes - it has a direct download link or links
https://drive.google.com/open?id=1xclbjHHK58zk2X6iqbvMPS2rcy9y9E0X
Unclear
The corpus of the two tasks is publicly available for the research purpose at the NLP@UIT group’s website1