Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
canh ban » canh dan, canh van, doanh ban
cong van » cong vang, cong san, song van
van chat » cao chat
can ban » van ban, 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 sang - ((canh ban) or (can ban)) va nhung cong van chat va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((canh ban) OR (can ban)) va nhung cong van chat va.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((canh ban) or (can ban)) va nhung cong van chat va*.