Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, truong thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
chau tinh » cuu tinh, ha tinh, cua tinh
tran tuan » tran xuan, tran quang, tran thanh
bang cong » dang cong, bang song, hang cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh 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: ho ((hieu manh) or (chau tinh)) - thanh ((trung tuan) or (tran tuan)) bang cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (chau tinh)) - thanh ((trung tuan) OR (tran tuan)) bang cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (chau tinh)) - thanh ((trung tuan) or (tran tuan)) bang cong dan toan cau*.