Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chinh » tai chinh, hoc chinh, doi chi
hang cong » dang cong, hang nong, bang cong
do chinh » hoc chinh, mo hinh, do dinh
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan ban » can ban, chat ban, chan nan
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 chinh) or (do chinh)) sach - hanh trinh va hang cong dan chan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chinh) OR (do chinh)) sach - hanh trinh va hang cong dan chan ban.
• Adding a wildcard symbol may retrieve word variants: ((doi chinh) or (do chinh)) sach - hanh trinh va hang cong dan chan ban*.