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

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 (chiet tach))) OR (nhieu tang)) - hanh nang xuat phong trong tan toan cau~.
• Adding a wildcard symbol may retrieve word variants: theo ((((chieu sach) or (chiet tach))) or (nhieu tang)) - hanh nang xuat phong trong tan toan cau*.