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 tuan » thanh tuan, tran tuan, thanh xuan
doc hieu » toc thieu, hoc thieu, hoc hien
cua tong » cua cong, cua dong, cua nong
tuan ban » tuan bang, toan ban, luan 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 tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - ((hanh trinh) OR (canh tranh)) cua tong thong than tuan ban.
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - ((hanh trinh) or (canh tranh)) cua tong thong than tuan ban*.