Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
tuong cong » truong cong, trong cong, tong cong
trung va » truong va, trung ha, trung tam
trang va » tran van, hang va
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham 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 ((chieu xanh) or (chinh sach)) - thanh ((trung va) or (trang va)) tuong cong tam toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chinh sach)) - thanh ((trung va) OR (trang va)) tuong cong tam toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chinh sach)) - thanh ((trung va) or (trang va)) tuong cong tam toan cau*.