Perhaps you should try some spelling variations:
hanh manh » hanh mang, lanh manh, hoang manh
hang cong » dang cong, hang nong, bang cong
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
manh cua » doanh cua, ban cua
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: theo chu sach - hanh manh cua ((hang cong) or (dung cong)) manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - hanh manh cua ((hang cong) OR (dung cong)) manh toan cau.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hanh manh cua ((hang cong) or (dung cong)) manh toan cau*.