Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
luan nhung » luan chung, luan hung, quan nhung
phuong lan » phuong la, thuong lan, phuong linh
tran cau » tran chau, ran cau, tra cau
toan cau » toan cao, toan ban, toan tap
ha dong » hoat dong

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 - ((ha dong) OR (van dong)) luan nhung phuong lan ((tran cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - ((ha dong) or (van dong)) luan nhung phuong lan ((tran cau) OR (toan cau))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((ha dong) or (van dong)) luan nhung phuong lan ((tran cau) OR (toan cau))*.