Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, thi chieu
trinh cong » trinh dung
hanh hang » thanh hang, hang hang, hanh han
qua trinh » qua kinh
theo chu » cho chu, chao chu, theo yeu
hang qua » hang quan, hang cua, hanh qua
cong san » cong tac
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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 chu)) sach - hanh hang qua trinh cong san ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) sach - hanh hang qua trinh cong san ((toan cau) OR (toan tap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo chu)) sach - hanh hang qua trinh cong san ((toan cau) or (toan tap))*".