Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh manh » hanh mang, hoang manh, thanh minh
lanh manh » lanh tranh, lan anh, van manh
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc hien)) sach - ((hanh manh) or (lanh manh)) cua nhung cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc hien)) sach - ((hanh manh) OR (lanh manh)) cua nhung cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc hien)) sach - ((hanh manh) or (lanh manh)) cua nhung cong san toan ban*.