Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
tuong doanh » trong doanh, dung doanh, cuong danh
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
trinh vat » trinh van, trinh luat, sinh vat
doanh van » doan van, doanh va, doanh ban
trinh va » trinh van, trinh ve, trinh vi

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: theo chieu sang - hanh ((trinh vat) OR (trinh va)) nhung tuong doanh van ban~.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - hanh ((trinh vat) or (trinh va)) nhung tuong doanh van ban*.