Perhaps you should try some spelling variations:
nhung luong » hung luong, nhung huong, nhung tuong
thieu sang » chieu sang, thieu khang, thieu quang
truong cao » truong dai
hoc thieu » toc thieu, hoc hien
truong va » truong dai, truong dao, luong va
van toan » van tuan, van tan, van thanh
va toan » bai toan, tap toan, va thanh

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 sang - anh ((truong va) OR (truong cao)) nhung luong ((va toan) or (van toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - anh ((truong va) OR (truong cao)) nhung luong ((va toan) OR (van toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - anh ((truong va) OR (truong cao)) nhung luong ((va toan) or (van toan)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - anh ((truong va) OR (truong cao)) nhung luong ((va toan) or (van toan)) ban*.