Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trang » canh tranh, hanh trinh, minh trang
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
nong tac » dong tac, nong tan, tuong tac
cong tac » cong ty
tao cao » bao cao, toan cao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - ((hanh trang) OR (thanh trung)) cua cong ((nong tac) OR (cong tac)) tao cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu xanh - ((hanh trang) OR (thanh trung)) cua cong ((nong tac) or (cong tac)) tao cao~".
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - ((hanh trang) OR (thanh trung)) cua cong ((nong tac) or (cong tac)) tao cao*.