Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
van doanh » toan doanh, van dong, van thanh
hieu van » thien van, lieu va, hieu ve
doanh va » doan va, doanh tai, doanh cua
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
hieu va » lieu va, hieu qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (((hieu van) OR (hieu va)))) - van doanh va nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (((hieu van) OR (hieu va)))) - van doanh va nhung cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (((hieu van) OR (hieu va)))) - van doanh va nhung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (((hieu van) OR (hieu va)))) - van doanh va nhung cong dan toan cao*.