Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
kien sach » dien sach, vien bach, kien mac
tang cua » mang cua, tang luan, thong cua
hang cua » mang cua, hang ca, huong cua
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien hach) or (kien sach)) - hanh ((tang cua) or (hang cua)) nhung cong tan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (kien sach)) - hanh ((tang cua) OR (hang cua)) nhung cong tan toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) or (kien sach)) - hanh ((tang cua) or (hang cua)) nhung cong tan toan tap*.