Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
mot chieu » doi chieu, ho chieu
dung cua » dung luan, dung cho
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doi chi)) xanh - thanh ((trung tuan) or (dung cua)) nhung cong ban toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chi)) xanh - thanh ((trung tuan) OR (dung cua)) nhung cong ban toan cau.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chi)) xanh - thanh ((trung tuan) or (dung cua)) nhung cong ban toan cau*.