Perhaps you should try some spelling variations:
phuong trong » thuong trong, huong trong, phong trong
xuat phuong » xuat thuong, xuan phuong, luat thuong
chieu sach » chinh sach, chiet tach, chieu sang
nhieu tang » chieu sang, hieu lang, nhiet nang
hanh nang » anh nang, ganh nang, hanh mang
nang xuat » nang suat, hang xuat, nang xuan
trong tan » trong quan, trong cac, trong ca
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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 sach) OR (nhieu tang)) - hanh nang xuat phuong trong tan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (nhieu tang)) - hanh nang xuat phuong trong tan ((toan cau) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (nhieu tang)) - hanh nang xuat phuong trong tan ((toan cau) OR (toan tap))*.