Perhaps you should try some spelling variations:
thanh tung » thanh cong
hien danh » thien danh, hien hanh, hien nhanh
cua chong » cua cong, cua chung, cua khong
tung cua » trung cua, tuong cua, dung cua
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
khan cap » khan ap, than cap, khoan cam

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 chong ((cong ban) OR (cong tan)) khan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien danh - thanh tung cua chong ((cong ban) OR (cong tan)) khan cap".
• Adding a wildcard symbol may retrieve word variants: hoc hien danh - thanh tung cua chong ((cong ban) OR (cong tan)) khan cap*.