Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, hieu quan
trien quang » tran quang, tuyen quang, dien quang
truong cua » truong ca, truong quan, truong cao
thong cong » trong cong, tong cong, thong thong
trung cua » trung tuan, trung cap, dung cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 quang) or (trien quang)) - thanh ((trung cua) OR (truong cua)) thong cong dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu quang) OR (trien quang)) - thanh ((trung cua) OR (truong cua)) thong cong dan than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu quang) or (trien quang)) - thanh ((trung cua) OR (truong cua)) thong cong dan than cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu quang) or (trien quang)) - thanh ((trung cua) OR (truong cua)) thong cong dan than cau*.