Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
phan dang » phan dau, phan cong, nhan dan
ho chieu » theo chieu, hoc thieu, doi chieu
han dang » nhan dang, chan dang, van dang
toan tap » toan ban
va toan » van toan, bai toan, tap toan

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 trinh ((han dang) OR (phan dang)) hang va toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh ((han dang) OR (phan dang)) hang va toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh ((han dang) OR (phan dang)) hang va toan tap*.