Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
hanh tranh » canh tranh, hanh trinh, hanh trang
dung thong » dung thuong, dung trong, dong thong
quan trien » quan tren, quang thien, quan tri
tranh cua » doanh cua, manh cua
trien van » thien van, trien san, trien nhan
cua dung » cua dang, cua dong, qua dung

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 (chiet tach)) - hanh tranh cua dung thong quan trien van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chiet tach)) - hanh tranh cua dung thong quan trien van".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) OR (chiet tach)) - hanh tranh cua dung thong quan trien van*.