Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
bang cong » dang cong, hang cong, dung cong
bang song » nang song
chi xanh » chi anh, chi danh, chieu xanh
chi hanh » chi nhanh, chi thanh, thi hanh
tan toan » tan tran, tap toan, van toan
toan tap » toan ban

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 ((bang cong) OR (bang song)) tan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi xanh) OR (chi hanh)) - thanh trung tuan ((bang cong) OR (bang song)) tan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi xanh) or (chi hanh)) - thanh trung tuan ((bang cong) OR (bang song)) tan toan tap".
• Adding a wildcard symbol may retrieve word variants: doi ((chi xanh) or (chi hanh)) - thanh trung tuan ((bang cong) OR (bang song)) tan toan tap*.