Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hinh dinh » binh dinh, trinh dinh, hinh anh
nong tan » cong tan, nong dan, nong san
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
va hang » van hang, va lang, va hanh
va nang » van nang, da nang, cam nang

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hinh dinh ((va hang) OR (va nang)) nong tan toan cao~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hinh dinh ((va hang) OR (va nang)) nong tan toan cao*.