Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
tuan dung » tuan duong, tran dung, tan dung
dung cong » dung trong
chi xanh » chi anh, chi danh, chieu xanh
chi hanh » chi nhanh, chi thanh, thi hanh
cong tac » cong ty
tren cau » tren ca, tren tau, trinh cau
tren cay » trien cay, tren may, ten cay

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chi xanh) OR (chi hanh)) - thanh trung tuan dung cong tac ((tren cau) or (tren cay))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi hanh)) - thanh trung tuan dung cong tac ((tren cau) OR (tren cay)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi xanh) OR (chi hanh)) - thanh trung tuan dung cong tac ((tren cau) or (tren cay))".
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) OR (chi hanh)) - thanh trung tuan dung cong tac ((tren cau) or (tren cay))*.