Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu sach » chinh sach, chiet tach, chieu sang
va phuong » va thuong, cac phuong
ho chieu » theo chieu, hoc thieu, doi chieu
hanh han » hanh nhan, hanh phan, hanh san
cong van » cong vang, cong san, song van
than cau » toan cau, phan cau, than cap
phan dau » phan tu, hang dau
han va » hang va, hanh va, nhan va

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 han va phuong cong van ((than cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh han va phuong cong van ((than cau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh han va phuong cong van ((than cau) or (phan dau))*.