Perhaps you should try some spelling variations:
hien thanh » thien thanh, hien hanh, dien thanh
tien thanh » tran thanh, den thanh
nhung cong » dung cong, thong cong, hang cong
chinh cua » chinh ca, chinh sua, hinh cua
cua nhung » va nhung
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 thanh) or (((tien thanh) OR (tien thinh)))) - hanh chinh cua nhung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien thanh) OR (((tien thanh) OR (tien thinh)))) - hanh chinh cua nhung cong tan toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien thanh) or (((tien thanh) OR (tien thinh)))) - hanh chinh cua nhung cong tan toan cao*".