Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
phuong dan » phuong danh, huong dan, phuong lan
doi chieu » doc hieu, doi chi, ho chieu
cua dung » cua dang, cua dong, qua dung
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) OR (thanh tung)) cua dung ((phuong dan) or (phuong doan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((thanh trung) OR (thanh tung)) cua dung ((phuong dan) OR (phuong doan)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((thanh trung) OR (thanh tung)) cua dung ((phuong dan) or (phuong doan)) toan cao".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((thanh trung) OR (thanh tung)) cua dung ((phuong dan) or (phuong doan)) toan cao*.