Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trung cap » truong cao, trung tam
chu xanh » chieu xanh, chua xang, chuc danh
chu manh » ho manh, chu han, chu van
mang cua » manh cua, dung cua, ban cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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: theo ((chu xanh) OR (chu manh)) - hanh ((mang cua) OR (trung cap)) nhung cong dan than tap~.
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) or (chu manh)) - hanh ((mang cua) or (trung cap)) nhung cong dan than tap*.