Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
tap doan » tap quan
van toan » van tuan, van tan, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - hanh ((tang cua) or (mang cua)) nhung cong ((tap doan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - hanh ((tang cua) OR (mang cua)) nhung cong ((tap doan) OR (van toan)) cao.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hanh ((tang cua) or (mang cua)) nhung cong ((tap doan) or (van toan)) cao*.