Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thanh trung » thanh tung
thien hach » hien hanh
trung cua » truong cua, trung tuan, trung cap
cua trong » cua truong, cua trung, qua trong
cong doan » cong dan, cong hoan, dong doanh
doan tuan » doan quan, doanh luan, doan quang
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 ((thien hach) OR (thien thanh)) - thanh trung cua trong cong doan tuan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) OR (thien thanh)) - thanh trung cua trong cong doan tuan cau*.