Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
thanh han » thanh phan, thanh nhan, thanh hang
cua nhung » va nhung
hanh han » hanh nhan, hanh phan, hanh san
cong van » cong vang, cong san, song van
toan cau » toan ban, toan tap, toan tai
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: hoc chieu sach - ((hanh han) or (thanh han)) cua nhung cong van ((toan cau) OR (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((hanh han) OR (thanh han)) cua nhung cong van ((toan cau) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((hanh han) or (thanh han)) cua nhung cong van ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((hanh han) or (thanh han)) cua nhung cong van ((toan cau) OR (toan cao))*.