Perhaps you should try some spelling variations:
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
theo chu » theo chieu, cho chu, chao chu
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tinh chat
toan tap » toan ban

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) or (ho chieu)) sach - hanh ((tinh cua) or (trinh luat)) dung cong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chu) OR (ho chieu)) sach - hanh ((tinh cua) OR (trinh luat)) dung cong manh toan tap.
• Adding a wildcard symbol may retrieve word variants: ((theo chu) or (ho chieu)) sach - hanh ((tinh cua) or (trinh luat)) dung cong manh toan tap*.