Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh manh » hanh mang, lanh manh, hoang manh
dang cong » dung cong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
manh cua » doanh cua, ban cua
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - hanh manh cua ((nhung cong) OR (dang cong)) dan ((than cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - hanh manh cua ((nhung cong) or (dang cong)) dan ((than cau) OR (toan cau))~".
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hanh manh cua ((nhung cong) or (dang cong)) dan ((than cau) OR (toan cau))*.