Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
phuong anh » phuong hoang
tranh va » tranh van, trang va, trinh va
anh toan » manh toan, anh tuan, thanh toan
toan tai » toan tap, doanh tai, toan ban
va doan » va doanh, van doan, va dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chieu sang)) - canh tranh va doan phuong anh toan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - canh tranh va doan phuong anh toan tai*.