Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dung chung » dung cong, dung ung, dung trung
trinh cua » trinh luat, trinh quan, trinh luan
chung lan » chung luan, nhung lan, chung han
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » sinh cua, tinh chat, tranh cua
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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 (tinh cua)) dung chung lan ((phan cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh cua) OR (tinh cua)) dung chung lan ((phan cau) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trinh cua) OR (tinh cua)) dung chung lan ((phan cau) or (phan dau))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh cua) OR (tinh cua)) dung chung lan ((phan cau) or (phan dau))*.