Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
cong tam » cong tac, cong tan, cong nam
toan ban » van 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 sach - hanh ((tinh cua) OR (trinh cua)) hang ((cong tam) or (cong thanh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((tinh cua) OR (trinh cua)) hang ((cong tam) OR (cong thanh)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((tinh cua) OR (trinh cua)) hang ((cong tam) or (cong thanh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((tinh cua) OR (trinh cua)) hang ((cong tam) or (cong thanh)) toan ban*.