Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
tranh cam » trinh cam, tranh cac, tranh cai
dang cong » dung cong
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
cam dang » cao dang, cam nang, cac dang
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 ((thien thanh) or (dieu hanh)) - canh tranh cam dang cong hach toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (dieu hanh)) - canh tranh cam dang cong hach toan cao*.