Perhaps you should try some spelling variations:
cong thinh » cong trinh, cong thanh, cong tinh
thinh doan » chinh doanh, hinh toan, thi doan
doc hieu » hoc thieu, hoc hien
tinh dan » trinh dan, tinh da, binh dan
dan thuc » dan toc, am thuc
thuc dan » thuc hanh, hoc dan, thuc vat
dan cong » dang cong, van cong, dan dong
doan cap » doanh cao, dan ca, toan cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) sang - tinh dan thuc dan cong thinh doan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) sang - tinh dan thuc dan cong thinh doan cap*.