Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, mot chieu
tong cong » trong cong, cong cong, dung cong
trinh han » trinh quan
tung ban » tuong ban, tung dan, tang ban
ban tong » ban trong, ban tuong, ban thong
han cau » hang cau, phan cau, van cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh tung ban tong cong trinh han cau~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung ban tong cong trinh han cau*.