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
mang qua » mang cua, nang quan, tang quan
mang vua » mang cua, mang va, hang va
cong san » cong tac
san than » sang than, san thanh, ban than
than cao » toan cao, thai cao, than cap

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 - hanh ((mang qua) or (mang vua)) nhung cong san than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((mang qua) OR (mang vua)) nhung cong san than cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((mang qua) or (mang vua)) nhung cong san than cao*.