Perhaps you should try some spelling variations:
quang dung » quang trung, ung dung, cuong dung
tieu xanh » tieu danh, chieu xanh, dieu hanh
quan dung » quan duong, qua dung, quan dong
dong bang » dong san
hanh van » thanh van, khanh van, hanh va
than cau » toan cau, than cap, thanh chau
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: theo tieu xanh - hanh van ((quan dung) OR (quang dung)) dong bang ((than cau) OR (phan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh van ((quan dung) OR (quang dung)) dong bang ((than cau) or (phan cau))~".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh van ((quan dung) OR (quang dung)) dong bang ((than cau) or (phan cau))*.