Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh hanh » trinh thanh, trinh han, trinh anh
hieu xanh » chieu xanh, hieu manh, hieu nganh
trinh cua » tinh cua, trinh luat, trinh quan
dang cong » dung cong
cua dang » cua cong, cua ban
hanh cac » hang cac, hanh cat, nhanh cay

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) or (dieu hanh)) - hanh trinh cua dang cong trinh hanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (dieu hanh)) - hanh trinh cua dang cong trinh hanh cac.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (dieu hanh)) - hanh trinh cua dang cong trinh hanh cac*.