Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
phuong danh » phuong anh, phuong dinh, phuong hanh
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
danh toan » manh toan, anh toan, dan toan
trang va » hang va
tran van » luan van
toan cau » 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 sach - thanh ((trang va) or (tran van)) dung phuong danh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh ((trang va) OR (tran van)) dung phuong danh toan cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh ((trang va) or (tran van)) dung phuong danh toan cau*.