Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
bong lanh » dong lanh, nong lanh, song lanh
ho chieu » theo chieu, hoc thieu, doi chieu
ban bong » ban cong, ba bong, ban tong
toan cau » toan cao, toan ban, toan tai
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: ho chieu sach - ((hanh tranh) or (hanh trinh)) cua ban bong lanh ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh tranh) OR (hanh trinh)) cua ban bong lanh ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh tranh) or (hanh trinh)) cua ban bong lanh ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh tranh) or (hanh trinh)) cua ban bong lanh ((toan cau) OR (toan tap))*.