Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, minh trang
hanh trinh » canh tranh, hanh chinh
thuong tap » thuong gap, thuong thay, thuong mai
hoc chieu » hoc thieu, ho chieu, hoc hien
van dung » xay dung, tin dung
tap doan » tap quan
doan ban » doanh ban, toan ban, doan van

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