Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
manh huong » anh huong, manh hung, manh cuong
huong cua » dung cua
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
cua dung » cua dang, cua dong, qua dung
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (chieu xanh)) - manh huong cua dung cong vang ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu xanh)) - manh huong cua dung cong vang ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu xanh)) - manh huong cua dung cong vang ((toan cau) or (toan tap))*.