Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trinh » canh tranh, hanh chinh
trinh toan » tinh toan, thanh toan, trinh quan
trinh han » trinh quan
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
han dang » phan dang, nhan dang, chan dang
toan cau » toan cao, toan ban, toan tap

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 - hanh trinh han dang cong trinh toan cau~.
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - hanh trinh han dang cong trinh toan cau*.