Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
hanh trang » thanh trung, canh tranh, hanh trinh
theo chieu » theo tieu, ho chieu
thi chieu » thi chien, thi hieu, thi hien
va phuong » va thuong, cac phuong
theo chu » cho chu, chao chu, theo yeu
trang va » tran van, hang va
cong tac » cong ty
tac toan » tap toan, tam toan, hach 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: ((((theo chieu) OR (thi chieu))) or (theo chu)) sach - hanh trang va phuong cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((theo chieu) OR (thi chieu))) OR (theo chu)) sach - hanh trang va phuong cong tac toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((theo chieu) OR (thi chieu))) or (theo chu)) sach - hanh trang va phuong cong tac toan cao*".