Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
thanh tran » thanh trang, thanh toan, thanh tra
tuan nhung » quan nhung, tuan hung, thuat nhung
cong luong » cong thuong, nang luong, cong dong
hien xanh » hien hanh, chieu xanh, hien khanh
tran tuan » tran xuan, tran quang, tran thanh
cong lang » cong vang, cong quang, cong ngang
than cau » toan cau, phan cau, than cap

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