Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
hanh tang » hanh trang, hanh mang, hanh tung
cua nhung » va nhung
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
anh tang » anh bang, anh dang, anh nang
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 tieu) or (doi chieu)) sach - ((hanh tang) OR (anh tang)) cua nhung cong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (doi chieu)) sach - ((hanh tang) OR (anh tang)) cua nhung cong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (doi chieu)) sach - ((hanh tang) OR (anh tang)) cua nhung cong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (doi chieu)) sach - ((hanh tang) OR (anh tang)) cua nhung cong manh toan cao*.