Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hien xanh » hien hanh, hien nhanh, chieu xanh
cong vang » cong lang, cong quang, cong ngang
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap
quan cua » quan luan, ban cua, gian cua
toan cau » toan cao, toan ban, toan tap

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 - hanh ((trung va) or (trung ha)) nhung cong vang ((quan cua) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh ((trung va) OR (trung ha)) nhung cong vang ((quan cua) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((trung va) or (trung ha)) nhung cong vang ((quan cua) or (toan cau))*.