Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh
dung cuong » dung cong, dung luong, dang cuong
hieu manh » hieu nganh, dieu hanh, hien hanh
cuong tap » luong tap, cong tac, luong tai
trung su » trung vu, trong su, trung du
tap toan » tap doan, tap quan, bai toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((hieu manh) OR (chieu xanh))) or (chieu sach)) - thanh trung su dung cuong tap toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((hieu manh) OR (chieu xanh))) OR (chieu sach)) - thanh trung su dung cuong tap toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((((hieu manh) OR (chieu xanh))) or (chieu sach)) - thanh trung su dung cuong tap toan cau*".