Perhaps you should try some spelling variations:
phuong luong » thuong luong, phuong duong, phuong dung
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
dang doan » dang dan, dang toan, dung doanh
luong tin » thong tin, luong tai, luong thi
dang don » dang do, dong don, dang dan
tin toan » tinh toan, nin toan, trinh toan
toan cau » 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 ((chieu sang) or (hieu lang)) - anh ((dang doan) OR (dang don)) phuong luong tin toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - anh ((dang doan) OR (dang don)) phuong luong tin toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (hieu lang)) - anh ((dang doan) OR (dang don)) phuong luong tin toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu lang)) - anh ((dang doan) OR (dang don)) phuong luong tin toan cau*.