Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((dieu hanh) or (((chieu sang) OR (hieu lang)))) - canh tranh cua thong cong dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((dieu hanh) OR (((chieu sang) OR (hieu lang)))) - canh tranh cua thong cong dan phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((dieu hanh) or (((chieu sang) OR (hieu lang)))) - canh tranh cua thong cong dan phan tu".
• Adding a wildcard symbol may retrieve word variants: ho ((dieu hanh) or (((chieu sang) OR (hieu lang)))) - canh tranh cua thong cong dan phan tu*.