Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuong cong » thong cong, thuong con, thuong dong
vien nganh » vien thanh
cua thuong » cua truong, cua phuong, ca thuong
hiem ngan » kim ngan, viem gan
trung cua » truong cua, trung tuan, trung cap
van thang » van thanh, van khang, van hang
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((vien nganh) or (hiem ngan)) - thanh trung cua thuong cong ((dan than) or (van thang)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((vien nganh) OR (hiem ngan)) - thanh trung cua thuong cong ((dan than) OR (van thang)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((vien nganh) or (hiem ngan)) - thanh trung cua thuong cong ((dan than) or (van thang)) cau*.