Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » tinh cua, trinh luat, trinh quan
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
dan toan » dan than, manh toan, xuan toan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - hanh trinh cua dong cong ((dan toan) OR (van toan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo hieu lang - hanh trinh cua dong cong ((dan toan) OR (van toan)) tap".
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh trinh cua dong cong ((dan toan) OR (van toan)) tap*.