Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » hanh trinh, lanh tranh, nhanh thanh
hanh trang » thanh trung, hanh trinh, minh trang
hang cong » dang cong, hang nong, bang cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong van » cong vang, cong san, song van
van chat » cao chat
chat tap » chat tai, chat thai, chat va
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 tranh) or (((hanh trang) OR (canh tranh)))) va hang cong van chat tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh tranh) OR (((hanh trang) OR (canh tranh)))) va hang cong van chat tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh tranh) or (((hanh trang) OR (canh tranh)))) va hang cong van chat tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh tranh) or (((hanh trang) OR (canh tranh)))) va hang cong van chat tap*.