Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
cuong tap » luong tap, cong tac, luong tai
ho chieu » theo chieu, hoc thieu, mot chieu
trang va » tran van, hang va
cong tap » cong tac, cong tan, tong tap
va hang » van hang, va nang, va lang

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 - hanh trang va hang ((cong tap) OR (cuong tap)) phan tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trang va hang ((cong tap) OR (cuong tap)) phan tu".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trang va hang ((cong tap) OR (cuong tap)) phan tu*.