Perhaps you should try some spelling variations:
thanh chac » thanh cac, thanh cham, thanh chau
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
tranh cao » trinh cao, tranh cac, tranh cai
dung cong » dung trong
thanh cha » thanh ha, thanh nha, thanh phan
cao dung » cao dang, cao dong, cao ung
cong ban » cong bang, cong san, cong tan

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 - canh tranh cao dung cong ban ((thanh chac) OR (thanh cha))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh tranh cao dung cong ban ((thanh chac) OR (thanh cha))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh cao dung cong ban ((thanh chac) OR (thanh cha))*.