Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong quang, cong lang
ngang tuan » quang tuan, hoang tuan, nganh toan
hien xanh » hien hanh, hien nhanh, chieu xanh
tong cong » trong cong, cong cong, dung cong
tuan chau » tran chau, chuan chau, thanh chau
trung va » truong va, trang va, trung tam
trung ha » trung hoc, trung tam, trung cap

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 - thanh ((trung va) or (trung ha)) tong cong ngang tuan chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - thanh ((trung va) OR (trung ha)) tong cong ngang tuan chau*.