Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh trong » hanh trang, anh trong, hinh trong
trong tuan » trong quan, trung tuan, trong tan
khanh toan » thanh toan, khanh thanh, khanh thuan
tuan nang » luan nang, xuan nang, tuan bang
hanh toan » thanh toan, manh toan, hach toan

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 sang)) - hanh trong tuan nang song ((hanh toan) OR (khanh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu sang)) - hanh trong tuan nang song ((hanh toan) OR (khanh toan)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) or (chieu sang)) - hanh trong tuan nang song ((hanh toan) OR (khanh toan)) cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu sang)) - hanh trong tuan nang song ((hanh toan) OR (khanh toan)) cao*.