Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, hieu quan
trien quang » tran quang, tuyen quang, dien quang
nhanh ban » nhanh bac, nhanh ba, thanh ban
quan dang » quang dang, quan lang, tuan dang
quan dong » quang dong, quan long, quan hoang
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan lap » toan lap, quan lap, luan lap

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)) - nhanh ban ((quan dang) or (quan dong)) cong van tuan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu quang) OR (trien quang)) - nhanh ban ((quan dang) OR (quan dong)) cong van tuan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu quang) OR (trien quang)) - nhanh ban ((quan dang) or (quan dong)) cong van tuan lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu quang) OR (trien quang)) - nhanh ban ((quan dang) or (quan dong)) cong van tuan lap*.