Perhaps you should try some spelling variations:
hien tach » thien hach, chiet tach, vien bach
hanh sinh » hanh tinh, hanh dinh, hinh sinh
sinh cua » manh cua, dinh cuu, sinh va
cua dung » cua dang, cua dong, qua dung
cong dan » huong dan, cong dong, cong tac
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
toan ban » van 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 hien tach - hanh sinh cua dung ((((cong dan) or (cong san))) or (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tach - hanh sinh cua dung ((((cong dan) OR (cong san))) OR (cong tan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien tach - hanh sinh cua dung ((((cong dan) or (cong san))) or (cong tan)) toan ban*.