Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hien sach » dien sach, kien sach, chieu sach
dang cong » dung cong
anh dang » anh dong, anh dung, anh bang
dang cua » dung cua, dong cua, mang cua
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van 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 (thien hach)) - anh dang cua dang cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (thien hach)) - anh dang cua dang cong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) or (thien hach)) - anh dang cua dang cong tan toan cao*.