Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
chieu sang » chieu sach, chieu xanh, hieu lang
nguoi van » nguoi dan, nguoi va, nguoi ban
nguoi san » nguoi tay, nguoi dao, nguoi ma
chinh su » hinh su, chinh phu, chinh ta
su thang » su thanh, su khang, duc thang
tan cao » toan cao, tao cao, tay cao

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

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