Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
luong toan » luong thanh, truong toan, luong tin
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
luong tai » dung tai, luong va
van cong » van dong, van phong, phan cong
cua van » cua ban, cua vat, cua dan

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 xanh) or (hieu lang)) - canh tranh cua van cong ((luong toan) OR (luong tai)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (hieu lang)) - canh tranh cua van cong ((luong toan) OR (luong tai)) cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (hieu lang)) - canh tranh cua van cong ((luong toan) OR (luong tai)) cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu lang)) - canh tranh cua van cong ((luong toan) OR (luong tai)) cao*.