Perhaps you should try some spelling variations:
truong cong » trong cong, truong dong, truong long
thieu tach » thien hach, chiet tach, chieu sach
hanh trinh » hanh chinh
hoc thieu » toc thieu, hoc hien
cong tap » cuong tap, cong tac, cong tan
doan cau » toan cau, doan dau, doanh chau
doan cap » doanh cao, dan ca, toan cao

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - ((hanh trinh) OR (canh tranh)) cac truong cong tap ((doan cau) OR (doan cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu tach - ((hanh trinh) or (canh tranh)) cac truong cong tap ((doan cau) OR (doan cap))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - ((hanh trinh) or (canh tranh)) cac truong cong tap ((doan cau) OR (doan cap))*.