Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu xanh » tieu danh, chieu xanh, dieu hanh
tranh va » tranh van, trinh va, thanh va
trang va » tran van, hang va
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

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 xanh - canh ((tranh va) or (trang va)) nhung cong tan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - canh ((tranh va) OR (trang va)) nhung cong tan phan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - canh ((tranh va) or (trang va)) nhung cong tan phan cau*.