Perhaps you should try some spelling variations:
thieu quang » thien quan, trien quang, hieu quan
hieu quang » hieu quan, hieu qua, diep quang
lanh manh » lanh tranh, lan anh, van manh
manh chua » manh cua, tranh chua, benh chua
chua nang » chuc nang, chua xang, kha nang
cong dan » cong san, cong tan, cong dong
toan tap » toan ban

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 (hieu quang)) - lanh manh chua nang ((cong dan) or (huong dan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu quang) OR (hieu quang)) - lanh manh chua nang ((cong dan) OR (huong dan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu quang) OR (hieu quang)) - lanh manh chua nang ((cong dan) or (huong dan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu quang) OR (hieu quang)) - lanh manh chua nang ((cong dan) or (huong dan)) toan tap*.