Perhaps you should try some spelling variations:
trong thanh » truong thanh, trung thanh, rong thanh
thanh thong » thanh thuong, thanh hong, thanh thang
hinh trong » chinh trong, dinh trong, sinh trong
dong nang » dong bang, dung nang, dong yang
dun nang » dung nang, den nang, luan nang
doi chi » doi khi
chi dan » choi dan, chi van, thi dan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi dan - hinh trong thanh thong ((dun nang) or (dong nang)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi dan - hinh trong thanh thong ((dun nang) OR (dong nang)) phan tu.
• Adding a wildcard symbol may retrieve word variants: doi chi dan - hinh trong thanh thong ((dun nang) or (dong nang)) phan tu*.