Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu nganh » vien nganh, hiem ngan, hieu manh
hanh trang » thanh trung, canh tranh, hanh trinh
nhan trong » nhuan trong, nhat trong, phan trong
nhin trong » chinh trong, nhiem trong, nhuan trong
trang cap » trung cap, trong cap, tranh chap
van toan » van tuan, van tan, van thanh
toan tap » toan ban

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 (hieu nganh)) - hanh trang cap ((nhan trong) OR (nhin trong)) van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (hieu nganh)) - hanh trang cap ((nhan trong) OR (nhin trong)) van toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (hieu nganh)) - hanh trang cap ((nhan trong) OR (nhin trong)) van toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (hieu nganh)) - hanh trang cap ((nhan trong) OR (nhin trong)) van toan tap*.