Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
hieu xanh » chieu xanh, hieu manh, dieu hanh
cua thong » cua thuong, cua khong, cua tong
cong danh » cuong danh, cong thanh, cong khanh
tinh cua » trinh cua, sinh cua, tinh chat
cong dan » cong san, cong tan, huong dan
tuan cau » toan cau, quan cau, tuan cu

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: cao ((hieu xanh) OR (hieu nganh)) - nhanh tinh cua thong ((cong danh) OR (cong dan)) tuan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "cao ((hieu xanh) or (hieu nganh)) - nhanh tinh cua thong ((cong danh) OR (cong dan)) tuan cau~".
• Adding a wildcard symbol may retrieve word variants: cao ((hieu xanh) or (hieu nganh)) - nhanh tinh cua thong ((cong danh) OR (cong dan)) tuan cau*.