Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
hoc thieu » toc thieu, hoc hien
cong dang » cong dong, cong dan, cong dung
dang toan » dang tran, dan toan, dung toan
toan ban » van ban
va hanh » van hanh, va thanh, va danh
va lang » va nang, hoa lang

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 - canh tranh ((va hanh) or (va lang)) cong dang toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - canh tranh ((va hanh) OR (va lang)) cong dang toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - canh tranh ((va hanh) or (va lang)) cong dang toan ban*.