Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, nhung don
hien hanh » dieu hanh
trang cua » tranh cua, tang cua, trung cua
hang cong » dang cong, hang nong, bang cong
van thanh » ban thanh, van tuan
thanh chu » thanh chau, thanh cha, thanh thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (hien hanh)) - hanh trang cua ((nhung cong) or (hang cong)) van thanh chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hien hanh)) - hanh trang cua ((nhung cong) OR (hang cong)) van thanh chu.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (hien hanh)) - hanh trang cua ((nhung cong) or (hang cong)) van thanh chu*.