Perhaps you should try some spelling variations:
quang dung » quang trung, ung dung, cuong dung
hanh trang » thanh trung, canh tranh, hanh trinh
hien xanh » hien hanh, hien nhanh, chieu xanh
thanh cac » hanh cac, thanh bac, thanh ca
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, than cua

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: hoc hien xanh - hanh trang ((cua dung) OR (quang dung)) cong tan ((than cap) OR (thanh cac))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh trang ((cua dung) or (quang dung)) cong tan ((than cap) OR (thanh cac))~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trang ((cua dung) or (quang dung)) cong tan ((than cap) OR (thanh cac))*.