Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu lang » chieu sang, hieu quang, nhieu tang
tong cong » trong cong, cong cong, dung cong
trung va » truong va, trang va, trung ha
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
vung va » dung va, luong va, duong va

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 (hieu lang)) - thanh ((vung va) or (trung va)) tong cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (hieu lang)) - thanh ((vung va) OR (trung va)) tong cong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu lang)) - thanh ((vung va) or (trung va)) tong cong tan toan cao*.