Perhaps you should try some spelling variations:
thanh phuong » thanh huong, thanh chuong, khanh phong
thanh thuong » thanh huong, thanh chuong, khanh thuong
hien sach » dien sach, kien sach, thien hach
nang cong » nang song, dang cong, bang cong
dien anh » tieng anh, dien dan
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien sach) or (dien anh)) - ((thanh thuong) OR (thanh phuong)) cam nang cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (dien anh)) - ((thanh thuong) OR (thanh phuong)) cam nang cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien sach) or (dien anh)) - ((thanh thuong) OR (thanh phuong)) cam nang cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) or (dien anh)) - ((thanh thuong) OR (thanh phuong)) cam nang cong dan toan ban*.