Perhaps you should try some spelling variations:
truong quang » truong quan, luong quang, thong quang
truong luan » truong quan, truong luat, tong luan
chieu sang » chieu sach, chieu xanh, hieu lang
lieu tinh » trieu tinh, diep tinh, bien tinh
cong san » cong tac
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((lieu tinh) or (chieu sang)) - hanh ((truong luan) OR (truong quang)) trong cong san than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((lieu tinh) OR (chieu sang)) - hanh ((truong luan) OR (truong quang)) trong cong san than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((lieu tinh) or (chieu sang)) - hanh ((truong luan) OR (truong quang)) trong cong san than cap".
• Adding a wildcard symbol may retrieve word variants: ho ((lieu tinh) or (chieu sang)) - hanh ((truong luan) OR (truong quang)) trong cong san than cap*.