Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
phung cong » nhung cong, phong cong, nhung chong
hanh hang » thanh hang, hang hang, hanh han
cong vang » cong lang, cong quang, cong ngang
ho chieu » hoc thieu, doi chieu, mot chieu
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: ((ho chieu) OR (theo 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: ((ho chieu) OR (theo chieu)) sach - hanh hang va phung cong vang ((than cau) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) sach - hanh hang va phung cong vang ((than cau) or (phan dau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) sach - hanh hang va phung cong vang ((than cau) or (phan dau))*.