Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
van quang » van quan, tran quang, van tuan
ho chieu » theo chieu, hoc thieu, doi chieu
van nang » van ban, van dong, van dung
song dan » song danh, song van, cong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 ((van nang) or (van quang)) song dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh ((van nang) OR (van quang)) song dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh ((van nang) or (van quang)) song dan toan cao*.