Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
van doanh » toan doanh, van dong, van thanh
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
hieu van » hieu va, thien van, lieu va
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: ho ((hieu lang) or (hieu van)) - van doanh tai ((nhung cong) OR (dung cong)) tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (hieu van)) - van doanh tai ((nhung cong) OR (dung cong)) tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (hieu van)) - van doanh tai ((nhung cong) OR (dung cong)) tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (hieu van)) - van doanh tai ((nhung cong) OR (dung cong)) tan toan cao*.