Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
anh quang » anh xquang, nhanh quang, tinh quang
dung cong » dung trong
anh quan » anh tuan, ban quan, anh nhan
cua dung » cua dang, cua dong, qua dung
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan cau » toan cau, quan cau, tuan cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - ((anh quang) or (anh quan)) cua dung cong van tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((anh quang) OR (anh quan)) cua dung cong van tuan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((anh quang) or (anh quan)) cua dung cong van tuan cau*.