Perhaps you should try some spelling variations:
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
hien danh » thien danh, hien hanh, hien nhanh
cua thong » cua thuong, cua khong, cua tong
tung cua » trung cua, tuong cua, dung cua
ban khan » ban than, ban chan, ban thanh
ban nhan » ban than, van nhan, ban thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien danh - thanh tung cua thong cong ((ban khan) or (ban nhan)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien danh - thanh tung cua thong cong ((ban khan) OR (ban nhan)) cap.
• Adding a wildcard symbol may retrieve word variants: hoc hien danh - thanh tung cua thong cong ((ban khan) or (ban nhan)) cap*.