Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh dinh » thanh dinh, hinh dinh, hanh tinh
tong song » tong cong, song song, tong son
dong song » dong son, song song, dong cong
dinh cuu » dinh chi
van quan » van ban
quan ban » quang ban, qua ban, quan van

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: hoc thieu xanh - hanh dinh cuu ((tong song) OR (dong song)) van quan ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh dinh cuu ((tong song) or (dong song)) van quan ban*.