Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
thanh tung » thanh cong
ho chieu » theo chieu, hoc thieu, doi chieu
va thong » va phuong, he thong, va cong
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cao » toan cao, thai cao, than cap

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) or (thanh tung)) ((va thong) OR (va thuong)) cong tac than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh trinh) OR (thanh tung)) ((va thong) OR (va thuong)) cong tac than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((hanh trinh) or (thanh tung)) ((va thong) OR (va thuong)) cong tac than cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh trinh) or (thanh tung)) ((va thong) OR (va thuong)) cong tac than cao*.