Perhaps you should try some spelling variations:
thanh trung » thanh tung
phuong doan » phuong loan, phuong hoang, huong dan
chieu sach » chiet tach, chieu sang, chieu xanh
phuong dan » phuong danh, huong dan, phuong lan
trung qua » trung quan, trong qua, trung cua
qua dung » quang dung, su dung, qua song
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (chinh sach)) - thanh trung qua dung ((phuong dan) OR (phuong doan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - thanh trung qua dung ((phuong dan) OR (phuong doan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chinh sach)) - thanh trung qua dung ((phuong dan) OR (phuong doan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chinh sach)) - thanh trung qua dung ((phuong dan) OR (phuong doan)) toan tap*.