Perhaps you should try some spelling variations:
chiet tach » chieu sach
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
hoc chiet » hoc thiet, hoc nhiet, hoc hien
hanh dung » thanh dung, anh dung, hanh dong
manh toan » thanh toan, anh tuan, tinh toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chiet tach - hanh dung luan nhung cong ((xuan toan) or (manh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chiet tach - hanh dung luan nhung cong ((xuan toan) OR (manh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc chiet tach - hanh dung luan nhung cong ((xuan toan) or (manh toan)) cau*.