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
trang va » tran van, hang va
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 hieu) or (hoc hien)) manh - thanh ((trang va) or (truong va)) nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hieu) OR (hoc hien)) manh - thanh ((trang va) OR (truong va)) nhung cong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) or (hoc hien)) manh - thanh ((trang va) or (truong va)) nhung cong dan toan cao*.