Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tuan » trung thanh, trung tam, truong thanh
phong cong » phong chong, thong cong, chong cong
hien xanh » hien hanh, hien nhanh, hien khanh
tran tuan » tran xuan, tran quang, tran thanh
cong anh » cong danh, dong anh, hong anh
tuan ban » tuan bang, toan ban, luan ban

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) OR (chieu xanh)) - hanh ((trung tuan) or (tran tuan)) phong cong anh tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - hanh ((trung tuan) OR (tran tuan)) phong cong anh tuan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - hanh ((trung tuan) or (tran tuan)) phong cong anh tuan ban*".