Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hieu manh » chieu xanh, dieu hanh, hien hanh
trinh he » trinh han, trinh hoa, trinh thi
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan tap » toan ban

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 nganh) or (hieu manh)) - hanh trinh he thong ((cong dan) or (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (hieu manh)) - hanh trinh he thong ((cong dan) OR (cong san)) toan tap.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) or (hieu manh)) - hanh trinh he thong ((cong dan) or (cong san)) toan tap*.