Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - canh ((tranh cua) or (manh cua)) nhung cong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh ((tranh cua) OR (manh cua)) nhung cong dan phan tu.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh ((tranh cua) or (manh cua)) nhung cong dan phan tu*.