Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
ho chieu » theo chieu, hoc thieu, doi chieu
trang va » hang va
tran van » luan van
cong sat » cong suat, cong san, cong hat
sat phan » sat nhan, vat phan, xuat phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (toc thieu)) sach - canh ((trang va) or (tran van)) phuong cong sat phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) sach - canh ((trang va) OR (tran van)) phuong cong sat phan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (toc thieu)) sach - canh ((trang va) or (tran van)) phuong cong sat phan cau*.