Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung tuan » trung thanh, trung tam, tran tuan
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tuan cong » thuan cong, luan cong, tran cong
cong cong » cong dong, trong cong, dung cong
so thiet » soc thiet, hoa thiet, tao thiet
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thiet) or (so thiet)) tach - thanh trung tuan cong cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (so thiet)) tach - thanh trung tuan cong cong san than cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (so thiet)) tach - thanh trung tuan cong cong san than cau*.