Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tong huong » thong huong, tong thuong, cong huong
hoc chieu » hoc thieu, ho chieu, hoc hien
chinh cua » chinh sua, hinh cua, chinh luan
chinh ca » chinh ta, chinh va, chinh tai
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: hoc chieu sach - hanh ((chinh cua) or (chinh ca)) tong huong dan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((chinh cua) OR (chinh ca)) tong huong dan ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((chinh cua) or (chinh ca)) tong huong dan ((toan cau) or (toan tap))*.