Perhaps you should try some spelling variations:
cong phuong » cong thuong, cong huong, dong phuong
phuong doan » phuong loan, phuong hoang, huong dan
hanh trong » hanh trang, hinh trong, chinh trong
anh trong » anh thuong, dinh trong, lang trong
doan phan » doanh phan, toan phan, dan phan
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 - ((hanh trong) or (anh trong)) thanh cong phuong doan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi dan - ((hanh trong) OR (anh trong)) thanh cong phuong doan phan tu.
• Adding a wildcard symbol may retrieve word variants: doi chi dan - ((hanh trong) or (anh trong)) thanh cong phuong doan phan tu*.