Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
tieu xanh » tieu danh, chieu xanh, dieu hanh
dung cong » dung trong
tranh va » tranh van, trinh va, thanh va
trang va » tran van, hang va
san phan » san pham, van phan, sat phan
phan dau » phan tu, hang dau

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