Perhaps you should try some spelling variations:
phung cong » nhung cong, phong cong, nhung chong
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
hanh hang » thanh hang, hang hang, hanh han
cong vang » cong lang, cong quang, cong ngang
va phung » va phuong, van phung, va nhung
than cau » toan cau, phan cau, than cap
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doi chieu)) sach - hanh hang va phung cong vang ((than cau) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) sach - hanh hang va phung cong vang ((than cau) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doi chieu)) sach - hanh hang va phung cong vang ((than cau) or (phan dau))*.