Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
hanh trinh » canh tranh, hanh chinh
hang xuong » hang luong, hang thuong, hoang vuong
manh toan » thanh toan, anh tuan, tinh toan
ban thanh » ban hanh, ban hang
trinh va » trinh van, trinh vat, trinh ve
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: doi ((chieu sach) or (chiet tach)) - hanh trinh va hang xuong ((manh toan) or (ban thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chiet tach)) - hanh trinh va hang xuong ((manh toan) OR (ban thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chiet tach)) - hanh trinh va hang xuong ((manh toan) or (ban thanh)) cau*.