Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
hanh manh » lanh manh, hoang manh, thanh minh
hanh mang » nhanh mang, hanh trang, nhanh lang
manh toan » thanh toan, anh tuan, tinh toan
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: doi chieu sach - ((hanh manh) OR (hanh mang)) cua ((nhung phuong) or (nhung cong)) manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((hanh manh) OR (hanh mang)) cua ((nhung phuong) OR (nhung cong)) manh toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((hanh manh) OR (hanh mang)) cua ((nhung phuong) or (nhung cong)) manh toan cao*".