Perhaps you should try some spelling variations:
trung tuan » trung thanh, tran tuan, truong thanh
khong cong » thong cong, khong cang, chong cong
theo chu » theo chieu, cho chu, chao chu
chu manh » ho manh, chu han, chu van
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
chan cau » phan cau, can cau, chinh cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu manh - thanh ((trung tuan) or (trung tam)) khong cong tan chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu manh - thanh ((trung tuan) OR (trung tam)) khong cong tan chan cau.
• Adding a wildcard symbol may retrieve word variants: theo chu manh - thanh ((trung tuan) or (trung tam)) khong cong tan chan cau*.