Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
tong cong » trong cong, dung cong, dang cong
cong cong » trong cong, dung cong, dang cong
van toan » van tuan, van tan, van thanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh trinh cua ((tong cong) or (((cong cong) OR (cong dong)))) van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trinh cua ((tong cong) OR (((cong cong) OR (cong dong)))) van toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh trinh cua ((tong cong) or (((cong cong) OR (cong dong)))) van toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trinh cua ((tong cong) or (((cong cong) OR (cong dong)))) van toan tap*.