Perhaps you should try some spelling variations:
hien thanh » thien thanh, hien hanh, tien thanh
nhung cong » dung cong, thong cong, hang cong
trung ha » trung hoc, trung tam, trung cap
trang va » tran van
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 hien thanh - thanh ((trung ha) or (((trang va) or (hang va)))) nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien thanh - thanh ((trung ha) OR (((trang va) OR (hang va)))) nhung cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien thanh - thanh ((trung ha) or (((trang va) or (hang va)))) nhung cong dan toan cao*.