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