Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
hanh mang » nhanh mang, hanh trang, nhanh lang
mang cua » manh cua, dung cua, ban cua
cua tong » cua cong, cua dong, cua nong
cong tan » cong tac, cong san, cong thanh
tran cao » toan cao, tran chau, trang cho

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 cua tong ((cong tan) or (cong ty)) tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh mang cua tong ((cong tan) OR (cong ty)) tran cao*.