Perhaps you should try some spelling variations:
chiet tach » chieu sach
cang thong » cang thang, cong thong, mang thong
nhung cong » dung cong, thong cong, hang cong
ho chiet » ho chieu, ho thiet, hoc thiet
thong va » thong cua, truong va, thong qua
cong tac » cong ty
tran cau » tran chau, ran cau, tra cau
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - cang thong va nhung cong tac ((tran cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - cang thong va nhung cong tac ((tran cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - cang thong va nhung cong tac ((tran cau) or (toan cau))*.