Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thieu sang » chieu sang, thieu quang, hieu lang
dang cong » dung cong
tang cua » mang cua, hang cua, tang luan
toan cao » toan ban, toan tap
cong ly » cong ty, cong li, cong my
ly toan » le toan, ly hoan, ly tran

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) or (thieu khang)) - hanh ((trung tam) or (tang cua)) dang cong ly toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu khang)) - hanh ((trung tam) OR (tang cua)) dang cong ly toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (thieu khang)) - hanh ((trung tam) or (tang cua)) dang cong ly toan cao*.