Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
chay cao » cay cao, chat cao, nha cao

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 tranh ((cua dung) or (cua dang)) ((cong dan) or (cong tan)) chay cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh tranh ((cua dung) OR (cua dang)) ((cong dan) OR (cong tan)) chay cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh tranh ((cua dung) or (cua dang)) ((cong dan) or (cong tan)) chay cao*.