Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
manh trung » manh tung, manh hung, sinh trung
ho chieu » theo chieu, hoc thieu, doi chieu
cua bang » chua bang, cua ban, cua dang
cong ban » cong bang, cong san, cong tan
cong tac » cong ty
phan cau » phan dau, phan cac, phan tu

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: ho chieu sang - ((manh trung) OR (thanh trung)) cua bang ((cong ban) OR (cong tac)) phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((manh trung) OR (thanh trung)) cua bang ((cong ban) or (cong tac)) phan cau~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((manh trung) OR (thanh trung)) cua bang ((cong ban) or (cong tac)) phan cau*.