Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trung » hanh trang, manh trung, danh trung
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
ung cong » dung cong, luong cong, duong cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - ((hanh trung) OR (thanh trung)) dap ung cong tac toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - ((hanh trung) OR (thanh trung)) dap ung cong tac toan cau*.