Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung nao » trung nhan, trung nhat, truong nam
trung nam » trung tam, trong nam, trung cap
dang cong » dung cong
cong manh » cong danh, duong manh, cong thanh
ho chieu » theo chieu, hoc thieu, doi chieu
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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 ((trung nao) or (trung nam)) dang cong manh ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trung nao) OR (trung nam)) dang cong manh ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trung nao) or (trung nam)) dang cong manh ((toan cau) or (toan cao))*.