Perhaps you should try some spelling variations:
cong trung » chong trung, cong truong, cong trong
trung dung » ung dung, trung uong, trinh dung
doi chieu » doc hieu, doi chi, mot chieu
phan dang » phan dau, phan cong, nhan dan
dang cong » dung cong
dung van » duong van, dung va, dang van
van dan » van ban, ban dan, van dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) tinh - phan dang cong trung dung van dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) tinh - phan dang cong trung dung van dan ca*.