Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh quan » tinh quang, trinh luat, trinh han
duong cong » dung cong, luong cong, duong trong
trinh cua » tinh cua, trinh luat, trinh luan
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, than cap, thanh chau
phan cau » phan dau, phan cac, phan tu

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 ((trinh cua) OR (trinh quan)) duong cong tan ((than cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh cua) OR (trinh quan)) duong cong tan ((than cau) OR (phan cau))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trinh cua) OR (trinh quan)) duong cong tan ((than cau) or (phan cau))*".