Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung thanh » truong thanh
hien nhanh » thien thanh, tien thanh, dien thanh
thanh hung » thanh huong, thanh tung, thanh cong
cong thanh » dong thanh, cong trinh, cong tan
hien hanh » dieu hanh
cong manh » cong danh, duong manh, hoang manh
toan cau » toan cao, toan ban, toan tap

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