Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
doc hieu » toc thieu, hoc thieu, hoc hien
cong ban » cong bang, cong san, cong tan
than cau » toan cau, than cap, thanh chau
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 - thanh ((trung cua) or (trung cap)) nhung cong ban ((than cau) OR (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh ((trung cua) OR (trung cap)) nhung cong ban ((than cau) OR (phan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - thanh ((trung cua) or (trung cap)) nhung cong ban ((than cau) OR (phan cau))".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh ((trung cua) or (trung cap)) nhung cong ban ((than cau) OR (phan cau))*.