Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thanh dinh » thanh binh, thanh tinh, thanh vinh
hoc thieu » toc thieu, hoc hien
dinh chi » dinh thi, dinh tri, dinh moi
dan than » dan chan, ban than, van than
chi han » chi phan, chi hanh, chin han
dan han » dan chan, dan hanh, dan phan

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 - thanh dinh chi han tong ((dan han) or (dan than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh dinh chi han tong ((dan han) OR (dan than)) tap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh dinh chi han tong ((dan han) or (dan than)) tap*.