Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
trang luan » tang luan, tranh luan, truong luan
trang tuan » tran tuan, trung tuan, trong tuan
hoc thieu » toc thieu, hoc hien
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap

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 ((trang luan) OR (trang tuan)) thong ((cong dan) or (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((trang luan) OR (trang tuan)) thong ((cong dan) OR (cong tan)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - hanh ((trang luan) OR (trang tuan)) thong ((cong dan) or (cong tan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((trang luan) OR (trang tuan)) thong ((cong dan) or (cong tan)) toan cao*.