Perhaps you should try some spelling variations:
tieu tinh » trieu tinh, tieu trinh, lieu tinh
dung cong » dung trong
cong san » cong tac
san tuan » van tuan, san luan, san quan
tuan cau » toan cau, quan cau, tuan cu
long va » luong va, long van, blong va
dong va » dung va, dong ha, luong va

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu tinh - thang ((long va) or (dong va)) dung cong san tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu tinh - thang ((long va) OR (dong va)) dung cong san tuan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu tinh - thang ((long va) or (dong va)) dung cong san tuan cau*.