Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
khuong tinh » chuong trinh, phuong binh, khun tinh
hanh doanh » hang doanh, chinh doanh, doanh doanh
huong tinh » thuong tinh, duong tinh, hung tinh
doanh cua » doanh luan
cua nhung » va nhung
chi sang » chi lang, chieu sang, chi chang
toan cao » toan ban, toan tap
doi chi » doi khi

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 sang - hanh doanh cua nhung ((huong tinh) or (((khuong tinh) OR (phuong trinh)))) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sang - hanh doanh cua nhung ((huong tinh) OR (((khuong tinh) OR (phuong trinh)))) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi sang - hanh doanh cua nhung ((huong tinh) or (((khuong tinh) OR (phuong trinh)))) toan cao".
• Adding a wildcard symbol may retrieve word variants: doi chi sang - hanh doanh cua nhung ((huong tinh) or (((khuong tinh) OR (phuong trinh)))) toan cao*.