Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh cua » doanh cua, manh cua
dung cong » dung trong
cong hach » cong sach, cong thanh, cong khanh
cua dung » cua dang, cua dong, qua dung

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 tranh cua dung cong hach ((toan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh tranh cua dung cong hach ((toan ban) OR (van ban))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh tranh cua dung cong hach ((toan ban) OR (van ban))*.