Perhaps you should try some spelling variations:
thien chanh » thien chinh, hien hanh, tien thanh
thien thanh » tien thanh, thi thanh, hien hanh
thanh trung » thanh tung
cua thuong » cua truong, cua phuong, cua huong
ca thuong » cao thuong, va thuong, cp thuong
phan cach » nhan cach, phan cac, phan tach
cong sat » cong suat, cong san, cong hat
sat phan » sat nhan, vat phan, xuat phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien chanh) or (thien thanh)) - thanh trung ((cua thuong) or (ca thuong)) cong sat phan cach~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien chanh) OR (thien thanh)) - thanh trung ((cua thuong) OR (ca thuong)) cong sat phan cach.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien chanh) or (thien thanh)) - thanh trung ((cua thuong) or (ca thuong)) cong sat phan cach*.