Perhaps you should try some spelling variations:
chiet tach » chieu sach
viet thanh » viet anh
thanh dung » thanh duong, thanh hung, hanh dung
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
tang thanh » dang thanh, trung thanh, hoang thanh
cua nhung » va nhung
cong tang » cong thang, cong tan, cong lang
thanh cau » thanh chau, thanh mau, nhanh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: khoa ((chiet tach) or (viet thanh)) - ((thanh dung) OR (thanh tung)) cua nhung cong tang thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: khoa ((chiet tach) OR (viet thanh)) - ((thanh dung) OR (thanh tung)) cua nhung cong tang thanh cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "khoa ((chiet tach) or (viet thanh)) - ((thanh dung) OR (thanh tung)) cua nhung cong tang thanh cau*".