Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
theo chieu » theo tieu, ho chieu, theo chu
chieu manh » chieu xanh, hieu manh, chu manh
cuu phuong » cac phuong, thu phuong
hanh dinh » thanh dinh, hinh dinh, hanh tinh
dinh cuu » dinh chi
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham toan
toan ban » van ban

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 manh - hanh dinh cuu phuong cong tam toan ban~.
• Adding a wildcard symbol may retrieve word variants: theo chieu manh - hanh dinh cuu phuong cong tam toan ban*.