Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
dung cong » dung trong
cong quan » cuong quan, cong quang, tong quan
ho chieu » theo chieu, hoc thieu, mot chieu
tran van » luan van
luan tan » luan tang, luan van, luan san

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 - thanh ((trung tuan) or (tran van)) dung cong quan luan tan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((trung tuan) OR (tran van)) dung cong quan luan tan.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((trung tuan) or (tran van)) dung cong quan luan tan*.