Perhaps you should try some spelling variations:
phuong van » phung van, phong van, phuong lan
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
minh tuan » anh tuan
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, toan tap
va doan » va doanh, van doan, va dan

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 - ((minh tuan) or (canh tranh)) va doan phuong van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((minh tuan) OR (canh tranh)) va doan phuong van toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((minh tuan) or (canh tranh)) va doan phuong van toan cau*.