Perhaps you should try some spelling variations:
thanh tung » thanh cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thiet hai » thiet bi, thi hai, thien tai
cua thang » cua hang, cua thanh, xua thang
cong doan » cong hoan, dong doanh, cong san
tung cua » trung cua, tuong cua, dung cua
cong dan » cong san, cong tan, huong dan
tuan cau » toan cau, quan cau, tuan cu

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet hai - thanh tung cua thang ((cong doan) OR (cong dan)) tuan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thiet hai - thanh tung cua thang ((cong doan) OR (cong dan)) tuan cau*.