Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chiet tach » chieu sach
hanh trung » thanh trung, hanh trang, manh trung
phuong dan » phuong danh, phuong doan, huong dan
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chiet tach) or (chinh sach)) - hanh trung cua nhung phuong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (chinh sach)) - hanh trung cua nhung phuong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (chinh sach)) - hanh trung cua nhung phuong dan toan cau*.