Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » thong cong, hang cong, nhung don
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
trang va » hang va
tran van » luan van
dan can » dan chan, dan canh, dan ca
can cau » van cau, ban cau, ca cau

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 - hanh ((trang va) or (tran van)) ((nhung cong) or (dung cong)) dan can cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trang va) OR (tran van)) ((nhung cong) OR (dung cong)) dan can cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trang va) or (tran van)) ((nhung cong) or (dung cong)) dan can cau*.