Perhaps you should try some spelling variations:
duong thang » dung thang, duong thanh, duong trong
dung duong » dung dong, dong duong, dung dung
doi chieu » doc hieu, doi chi, mot chieu
phan dan » phan dang, phan dau, nhan dan
dan dung » van dung, tin dung, ap dung
thang va » hang va, trang va, thong va
van chat » cao chat

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 dan dung duong thang va van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) tinh - phan dan dung duong thang va van chat.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) tinh - phan dan dung duong thang va van chat*.