Perhaps you should try some spelling variations:
nhung phong » nhung phuong, nhung chong, nung phong
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
doanh cua » doanh luan
phong van » phung van, thong van, phong va
manh cua » ban cua
van tan » van tuan, van ban, van tai
tan cao » toan cao, tao cao, tay cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh ((doanh cua) or (manh cua)) nhung phong van tan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((doanh cua) OR (manh cua)) nhung phong van tan cao.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((doanh cua) or (manh cua)) nhung phong van tan cao*.