Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
khong cong » thong cong, chong cong, khong con
khong cang » thong cong, hong bang, khong dung
trung cua » truong cua, trung tuan, trung cap
danh toan » manh toan, anh toan, dan toan
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 ((thieu xanh) or (thien thanh)) - thanh trung cua ((khong cong) OR (khong cang)) danh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien thanh)) - thanh trung cua ((khong cong) OR (khong cang)) danh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (thien thanh)) - thanh trung cua ((khong cong) OR (khong cang)) danh toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (thien thanh)) - thanh trung cua ((khong cong) OR (khong cang)) danh toan cau*.