Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trinh » hanh chinh
tong thong » thong thong, dong thong, cong thong
thong than » thong thanh, thong phan, thong nhan
than toan » thanh toan, than tuan, thuat toan
doc hieu » toc thieu, hoc thieu, hoc hien
cua tong » cua cong, cua dong, cua nong
toan ban » van 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 - ((hanh trinh) OR (canh tranh)) cua tong thong than toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu nganh - ((hanh trinh) OR (canh tranh)) cua tong thong than toan ban".
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - ((hanh trinh) OR (canh tranh)) cua tong thong than toan ban*.