Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh cua » trinh luat, trinh quan, trinh luan
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » sinh cua, tinh chat, tranh cua
tap doan » tap quan
doan cau » toan cau, doan dau, doan cap

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 ((tinh cua) or (trinh cua)) ((trong cong) or (dung cong)) tap doan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((tinh cua) OR (trinh cua)) ((trong cong) OR (dung cong)) tap doan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((tinh cua) or (trinh cua)) ((trong cong) or (dung cong)) tap doan cau*.