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 cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap nhung
cong dan » cong san, cong tan, cong dong
phan cau » phan dau, phan cac, phan tu

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