Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
hanh trang » thanh trung, canh tranh, hanh trinh
dung cong » dung trong
tien anh » tieng anh, tien manh, dien anh
trang va » tran van, hang va
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cau » toan cau, phan cau, than cap
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien anh) or (((chieu xanh) OR (chieu sach)))) - hanh trang va dung cong tan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien anh) OR (((chieu xanh) OR (chieu sach)))) - hanh trang va dung cong tan than cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((tien anh) or (((chieu xanh) OR (chieu sach)))) - hanh trang va dung cong tan than cau*".