Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
quang cua » quang tuan, quang huy, dung cua
dung cong » dung trong
quan cua » quan luan, ban cua, gian cua
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan cu » tuan tu, tuan thu, than cua

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - anh ((quang cua) OR (quan cua)) dung cong van tuan cu~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - anh ((quang cua) OR (quan cua)) dung cong van tuan cu*.