Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
truong va » truong dai, truong cao, truong dao
hoc hieu » hoc thieu, doc hieu, hoc dieu
trung va » trang va, trung ha, trung tam
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cao » chan cho, chat cao, chay cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc hieu) or (hoc hien)) manh - thanh ((trung va) or (truong va)) nhung cong dan chan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc hien)) manh - thanh ((trung va) OR (truong va)) nhung cong dan chan cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (hoc hien)) manh - thanh ((trung va) or (truong va)) nhung cong dan chan cao*.