Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trung » hanh trang, manh trung, danh trung
hien xanh » hien hanh, hien nhanh, chieu xanh
dung cong » dung trong
cap dung » ap dung, cao dung, chan dung
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 trung) OR (thanh trung)) cap dung cong dan ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - ((hanh trung) OR (thanh trung)) cap dung cong dan ((toan cau) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((hanh trung) OR (thanh trung)) cap dung cong dan ((toan cau) or (toan ban))*.