Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
phuong dan » phuong danh, phuong doan, huong dan
doi chieu » doc hieu, doi chi, ho chieu
trung hoc » trung quoc
hoc nhung » hoa nhung, hon nhung, nuoc nhung
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: doi chieu sach - thanh trung hoc nhung phuong dan ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh trung hoc nhung phuong dan ((toan cao) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh trung hoc nhung phuong dan ((toan cao) or (van ban))*.