Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
hien tinh » thien tinh, bien tinh, dien tinh
quan tong » quan trong, quan dong, quan long
tong cong » trong cong, cong cong, dung cong
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien tinh) OR (khien tinh)) - hanh trinh quan tong cong san toan ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien tinh) OR (khien tinh)) - hanh trinh quan tong cong san toan ban*.