Perhaps you should try some spelling variations:
nhung phuong » dung phuong, truong phuong, bang phuong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhu phuong » thu phuong, thi phuong, thu huong
hanh ban » thanh ban, hang ban, hanh san
toan cau » toan cao, toan ban, toan tap
ban cua » ban quan

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ban cua ((nhung phuong) OR (nhu phuong)) tinh toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ban cua ((nhung phuong) OR (nhu phuong)) tinh toan cau*.