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