Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
hang cua » mang cua, hang ca, huong cua
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac

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