Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh trung » thanh trung, hanh trang, manh trung
dung cong » dung trong
tam dung » tam duong, tac dung, tan dung
cong anh » cong danh, dong anh, hong anh
quan cau » quang cao, toan cau, quan ha
toan cao » toan ban, toan tap

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 sang)) - hanh trung tam dung cong anh ((quan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu sang)) - hanh trung tam dung cong anh ((quan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (chieu sang)) - hanh trung tam dung cong anh ((quan cau) or (toan cao))*.