Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hung cong » nhung cong, hung cuong, phung cong
ho chieu » hoc thieu, doi chieu, mot chieu
anh khoa » doanh khoa, hang khoa
khoa cam » khoan cam, khoa kham, khoa ma
cam hung » cac chung, cam nang, van hung
cong san » cong tac
tran cau » tran chau, ran cau, tra cau
toan cau » toan cao, toan ban, toan tap

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 (ho chieu)) sach - anh khoa cam hung cong san ((tran cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sach - anh khoa cam hung cong san ((tran cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sach - anh khoa cam hung cong san ((tran cau) or (toan cau))".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sach - anh khoa cam hung cong san ((tran cau) or (toan cau))*.