Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
phuong dinh » phuong binh, phuong linh, phuong trinh
theo chieu » theo tieu, theo chu, thi chieu
manh trung » thanh trung, manh hung, sinh trung
manh tung » manh hung, thanh tung
dinh toan » tinh toan, hinh toan, minh toan
ho chieu » hoc thieu, doi chieu, mot chieu
cua dung » cua dang, cua dong, qua dung
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 chieu) or (ho chieu)) sach - ((manh trung) OR (manh tung)) cua dung phuong dinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - ((manh trung) OR (manh tung)) cua dung phuong dinh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) sach - ((manh trung) OR (manh tung)) cua dung phuong dinh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) sach - ((manh trung) OR (manh tung)) cua dung phuong dinh toan cao*.