Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuong cong » thong cong, thuong con, thuong dong
hieu nganh » vien nganh, hieu manh, nghiep nganh
cua thuong » cua truong, cua phuong, ca thuong
hiem ngan » kim ngan, viem gan
trung cua » truong cua, trung tuan, trung cap
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van 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 ((hieu nganh) or (hiem ngan)) - thanh trung cua thuong cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu nganh) OR (hiem ngan)) - thanh trung cua thuong cong dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu nganh) or (hiem ngan)) - thanh trung cua thuong cong dan than cau*.