Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
hoang thai » hoang thi, hoang hai, hong thai
thang cong » thanh cong, thang long, thong cong
lua thang » la thang, xua thang, luan thanh
cong luan » tong luan, cong tuan, dong luan
thai lua » thai luan, thai luat, thai cua
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) OR (chieu tinh)) - hoang thai lua thang cong luan van tan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chieu tinh)) - hoang thai lua thang cong luan van tan".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) OR (chieu tinh)) - hoang thai lua thang cong luan van tan*.