Perhaps you should try some spelling variations:
tinh trang » minh trang, tinh quang, tinh toan
trang thuc » trang phuc, trong thuc, tran thuy
cong thinh » cong trinh, cong thanh, cong tinh
thuc hang » thuc hanh, thu hang, phuc hang
hang cong » dang cong, hang nong, bang cong
thinh dan » thinh doan, trinh dan, hinh dan
doc hieu » hoc thieu, hoc hien

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (toc thieu)) sang - tinh trang thuc hang cong thinh dan ca~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (toc thieu)) sang - tinh trang thuc hang cong thinh dan ca*.