Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhiet nang » nhiet dong, viet nang, nhieu tang
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
cua dung » cua dang, cua dong, qua dung
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: ho ((chieu sach) or (nhiet nang)) - hanh trang cua dung ((cong tac) OR (cong ty)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (nhiet nang)) - hanh trang cua dung ((cong tac) OR (cong ty)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (nhiet nang)) - hanh trang cua dung ((cong tac) OR (cong ty)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (nhiet nang)) - hanh trang cua dung ((cong tac) OR (cong ty)) toan cao*.