Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh quan » tinh quang, trinh luat, trinh han
thong cong » trong cong, tong cong, phong chong
hoc chieu » hoc thieu, ho chieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh luan
van tang » van thang, van trang, van nang
tang ban » tang bang, tiang ban, tang van

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 ((trinh cua) or (trinh quan)) ((thong cong) or (thong thong)) van tang ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trinh cua) OR (trinh quan)) ((thong cong) OR (thong thong)) van tang ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trinh cua) or (trinh quan)) ((thong cong) or (thong thong)) van tang ban*.