Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hien hach » thien hach, hien hanh, hien nhanh
trang cua » tranh cua, tang cua, trung cua
tong cong » trong cong, cong cong, dung cong
hang cong » dang cong, hang nong, bang cong
van khan » van khanh, van khang, van phan
khan dam » thanh dam, chang dam, khanh nam

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 hach - hanh trang cua ((tong cong) or (hang cong)) van khan dam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien hach - hanh trang cua ((tong cong) OR (hang cong)) van khan dam*.