Perhaps you should try some spelling variations:
thien chanh » thien thanh, thien chinh, tien thanh
hien hanh » dieu hanh
hanh tang » hanh trang, anh tang, hanh mang
dong cong » duong cong, dung cong, dang cong
tang cua » mang cua, hang cua, tang luan
cua dong » chua dong, cua cong, cua dang
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 ((((thien chanh) OR (hien hanh))) or (tieng anh)) - hanh tang cua dong cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thien chanh) OR (hien hanh))) OR (tieng anh)) - hanh tang cua dong cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((thien chanh) OR (hien hanh))) or (tieng anh)) - hanh tang cua dong cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((((thien chanh) OR (hien hanh))) or (tieng anh)) - hanh tang cua dong cong dan toan cao*.