Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
anh nang » ganh nang, anh bang, anh sang
anh dang » anh dong, anh dung, anh bang
van toan » van tuan, van tan, van thanh
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: theo tieu xanh - ((anh nang) or (anh dang)) cua ((hang cong) OR (bang cong)) van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - ((anh nang) OR (anh dang)) cua ((hang cong) OR (bang cong)) van toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - ((anh nang) or (anh dang)) cua ((hang cong) OR (bang cong)) van toan cao".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - ((anh nang) or (anh dang)) cua ((hang cong) OR (bang cong)) van toan cao*.