Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trung » thanh trung, hanh trang, manh trung
hien xanh » hien hanh, chieu xanh, hien khanh
trung cua » truong cua, trung tuan, trung cap
dong cong » duong cong, dang cong, cong cong
dung cong » dung trong
van anh » van thanh, tuan anh, van minh
anh cap » hanh cap, anh ca, anh cam

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 (hien nhanh)) - hanh trung cua ((dong cong) OR (dung cong)) van anh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - hanh trung cua ((dong cong) OR (dung cong)) van anh cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien nhanh)) - hanh trung cua ((dong cong) OR (dung cong)) van anh cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - hanh trung cua ((dong cong) OR (dung cong)) van anh cap*.