Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
bang cong » dang cong, bang song, hang cong
van thanh » ban thanh, van tuan
thanh van » thanh san, thanh toan, thanh phan
tinh cua » trinh cua, sinh cua, tinh chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien thanh) or (chieu xanh)) - hanh tinh cua ((nhung cong) or (bang cong)) van thanh van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (chieu xanh)) - hanh tinh cua ((nhung cong) OR (bang cong)) van thanh van.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (chieu xanh)) - hanh tinh cua ((nhung cong) or (bang cong)) van thanh van*.