Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thuong cam » thuong dam, phuong cham, thuong chau
hien sach » dien sach, kien sach, thien hach
nang cong » nang song, dang cong, bang cong
manh toan » thanh toan, anh tuan, tinh toan
dien anh » tieng anh, dien dan
dan toan » van toan, dan than, xuan toan

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