Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh toan » thanh toan, trinh toan, tinh toan
tong huong » thong huong, tong thuong, cong huong
hieu lang » chieu sang, hieu quang, nhieu tang
toan tong » toan thong, toan trong, toan cong
dan nhan » danh nhan, dan chan, van nhan
nhan tai » hang tai, van tai, toan tai

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) or (chinh sach))) or (hieu lang)) - hanh tranh toan tong huong dan nhan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((chieu sach) OR (chinh sach))) OR (hieu lang)) - hanh tranh toan tong huong dan nhan tai.
• Adding a wildcard symbol may retrieve word variants: ho ((((chieu sach) or (chinh sach))) or (hieu lang)) - hanh tranh toan tong huong dan nhan tai*.