Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
hanh hanh » hanh han, xanh hanh, nhanh thanh
dung cong » dung trong
tran chau » tranh chap, tran huu
cong tan » cong tac, cong san, cong thanh
tran cau » toan cau, ran cau, tra cau
hanh su » hanh sua, hinh su, hanh tu

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 hanh su dung cong tan ((tran cau) or (tran chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh hanh su dung cong tan ((tran cau) OR (tran chau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh hanh su dung cong tan ((tran cau) or (tran chau))*.