Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
dong thanh » truong thanh
hien xanh » hien hanh, hien nhanh, chieu xanh
trang cua » tranh cua, tang cua, trung cua
cua trung » cua truong, xuan trung, cua nhung
cong tac » cong ty
toan tap » toan 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 - hanh trang cua trung ((((cong san) OR (cong tac))) or (dong thanh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trang cua trung ((((cong san) OR (cong tac))) OR (dong thanh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh trang cua trung ((((cong san) OR (cong tac))) or (dong thanh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trang cua trung ((((cong san) OR (cong tac))) or (dong thanh)) toan tap*.