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
trang va » tran van, hang va
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
tang va » tang van, thang va, tang vat

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