Perhaps you should try some spelling variations:
cuoc chinh » hoc chinh, quoc thinh, cuoc chien
hanh trinh » canh tranh, hanh chinh
dung cong » dung trong
van thang » van thanh, van khang, van hang
ho chinh » hoc chinh, cho chinh, hoa chinh
trinh va » trinh van, trinh vat, trinh ve
ban than » ban thanh, van thanh, ban hang
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chinh) or (cuoc chinh)) sach - hanh trinh va dung cong ((van thang) or (ban than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chinh) OR (cuoc chinh)) sach - hanh trinh va dung cong ((van thang) OR (ban than)) cao.
• Adding a wildcard symbol may retrieve word variants: ((ho chinh) or (cuoc chinh)) sach - hanh trinh va dung cong ((van thang) or (ban than)) cao*.