Perhaps you should try some spelling variations:
tien thanh » tien thinh, tran thanh, den thanh
thanh tung » thanh cong
chong cong » cong cong, thong cong, cuong cong
tang thanh » dang thanh, trung thanh, hoang thanh
hien danh » thien danh, hien hanh, hien nhanh
cua chong » cua cong, cua chung, cua khong
tan thanh » tran thanh, toan thanh, ban thanh
tung cua » trung cua, tuong cua, dung cua

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) or (tien thanh)) - thanh tung cua chong cong ((tan thanh) OR (tang thanh)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien danh) OR (tien thanh)) - thanh tung cua chong cong ((tan thanh) OR (tang thanh)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien danh) or (tien thanh)) - thanh tung cua chong cong ((tan thanh) OR (tang thanh)) cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien danh) or (tien thanh)) - thanh tung cua chong cong ((tan thanh) OR (tang thanh)) cap*.