Perhaps you should try some spelling variations:
trung tuan » trung thanh, tran tuan, truong thanh
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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: theo chu xanh - thanh ((trung tuan) or (trung tam)) dung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - thanh ((trung tuan) OR (trung tam)) dung cong tan toan cao*.