Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
phuong cong » phuong dong, phong cong, phuong hoang
doanh thanh » danh thanh, doanh nhan, dinh thanh
thieu sang » chieu sang, thieu khang, hieu lang
phung cong » nhung cong, phong cong, nhung chong
lanh dinh » anh dinh, hanh dinh, thanh dinh
thanh dau » thanh dat, thanh dam, thanh mau
dinh cuu » dinh chi

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sang) OR (thieu quang)) - lanh dinh cuu ((phuong cong) or (phung cong)) doanh thanh dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu quang)) - lanh dinh cuu ((phuong cong) OR (phung cong)) doanh thanh dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) OR (thieu quang)) - lanh dinh cuu ((phuong cong) or (phung cong)) doanh thanh dau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) OR (thieu quang)) - lanh dinh cuu ((phuong cong) or (phung cong)) doanh thanh dau*.