Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
vien nganh » vien thanh
hanh trang » thanh trung, canh tranh, hanh trinh
trong van » trong cac
cap hang » cap hoang, cap bang, cau thang
van toan » van tuan, van tan, van thanh
toan ban » van ban
cap han » cap phan, cap can, cap hay

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