Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cua truong » xuan truong, cac truong, xa truong
than sinh » than kinh, nhan sinh, thai sinh
cua trung » xuan trung, cua nhung, ba trung
ho chieu » theo chieu, hoc thieu, doi chieu
dong von » dung von, dong co, dong hoc
von than » van than, con than, van thanh
than tap » toan tap, han tap, phan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - than sinh ((cua truong) or (cua trung)) dong von than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - than sinh ((cua truong) OR (cua trung)) dong von than tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - than sinh ((cua truong) or (cua trung)) dong von than tap*.