Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
hang cong » dang cong, hang nong, bang cong
chinh can » chinh ca, chinh ngan, chinh cong
chinh ban » chinh bao, chinh ngan, chinh luan
chinh cau » chinh chau, chinh ca, chinh tai
cong lan » cong luan, cong lang, cong san
tung va » trung va, tuong va, dung va
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 - thanh tung va hang cong lan ((((chinh can) OR (chinh ban))) or (chinh cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh tung va hang cong lan ((((chinh can) OR (chinh ban))) OR (chinh cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh tung va hang cong lan ((((chinh can) OR (chinh ban))) or (chinh cau))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung va hang cong lan ((((chinh can) OR (chinh ban))) or (chinh cau))*.