Perhaps you should try some spelling variations:
dong thuong » cong thuong, dong thong, dung thuong
thuong doan » phuong doan, huong dan, thuong han
trung tuan » trung thanh, trung tam, tran tuan
hoc thieu » toc thieu, hoc hien
ho chieu » theo chieu, doi chieu, mot chieu
tang cua » mang cua, hang cua, tang luan
doan van » doan va, hoang van, luan van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - hanh ((trung tuan) OR (tang cua)) dong thuong doan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - hanh ((trung tuan) or (tang cua)) dong thuong doan van ban~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) xanh - hanh ((trung tuan) or (tang cua)) dong thuong doan van ban*.