Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
trung dan » trung dai, tung dan, trung van
dan dung » van dung, tin dung, ap dung
cong san » cong tac
san ban » sang ban, van ban, can ban

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 - thanh trung dan dung trong cong san ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh trung dan dung trong cong san ban*.