Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
hien sach » kien sach, thien hach, chieu sach
dien sach » dien anh
trong van » trong cac
dong cong » duong cong, dung cong, dang cong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien sach) OR (dien sach)) - thanh trong van dong cong dan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien sach) OR (dien sach)) - thanh trong van dong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) OR (dien sach)) - thanh trong van dong cong dan toan cao*.