Perhaps you should try some spelling variations:
hanh trinh » hanh chinh
hoi chieu » doi chieu, hai chieu, hoi chiu
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
ho chieu » theo chieu, hoc thieu, doi chieu
cua dung » cua dang, cua dong, qua dung
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: ((hoi chieu) OR (ho chieu)) sach - ((hanh trinh) or (canh tranh)) cua dung cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoi chieu) OR (ho chieu)) sach - ((hanh trinh) OR (canh tranh)) cua dung cong manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoi chieu) OR (ho chieu)) sach - ((hanh trinh) or (canh tranh)) cua dung cong manh toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoi chieu) OR (ho chieu)) sach - ((hanh trinh) or (canh tranh)) cua dung cong manh toan ban*.