Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
trang cua » tranh cua, trung cua, thang cua
doc hieu » toc thieu, hoc thieu, hoc hien
tang cua » mang cua, hang cua, tang luan
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

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 - hanh ((trang cua) OR (tang cua)) nhung cong tan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh ((trang cua) OR (tang cua)) nhung cong tan phan cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh ((trang cua) OR (tang cua)) nhung cong tan phan cau*.