Perhaps you should try some spelling variations:
theo chieu » ho chieu, theo chu, thi chieu
cong ngang » cong nhan, cong quang, cong lang
ngang phan » nang phan, nang phat, nang phap
tong cong » trong cong, cong cong, dung cong
cong cap » cung cap, cong cau, cong cac
cap tong » cap nong, cap hoang, gap trong

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 (theo tieu)) sach - thanh cong cap tong cong ngang phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) sach - thanh cong cap tong cong ngang phan tu.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) sach - thanh cong cap tong cong ngang phan tu*.