Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
hoc thieu » toc thieu, hoc hien
chua nang » chuc nang, chua xang, kha nang
van manh » van minh, van hanh, van thanh
cong dan » cong san, cong tan, cong dong
toan tap » toan ban
van anh » van thanh, tuan anh, van minh

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 - ((van manh) OR (van anh)) 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 - ((van manh) OR (van anh)) 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 - ((van manh) OR (van anh)) chua nang ((cong dan) or (huong dan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - ((van manh) OR (van anh)) chua nang ((cong dan) or (huong dan)) toan tap*.