Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trinh » canh tranh
luat nhung » luat chung, luat thuong, thuat nhung
nhung cong » dung cong, thong cong, hang cong
cong tinh » cong trinh, cong vinh, long tinh
doc hieu » toc thieu, hoc thieu, hoc hien
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) OR (hanh chinh)) luat nhung cong tinh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu nganh - ((hanh trinh) OR (hanh chinh)) luat nhung cong tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - ((hanh trinh) OR (hanh chinh)) luat nhung cong tinh toan cau*.