Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
nhanh lang » nhanh quang, nhanh thang, nhan dang
hien sach » dien sach, kien sach, thien hach
hanh mang » nhanh mang, hanh trang, thanh hang
cua nhung » va nhung
tuong dan » huong dan, tung dan, xuong dan
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 - ((hanh mang) or (nhanh lang)) cua nhung tuong dan ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - ((hanh mang) OR (nhanh lang)) cua nhung tuong dan ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien sach - ((hanh mang) or (nhanh lang)) cua nhung tuong dan ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - ((hanh mang) or (nhanh lang)) cua nhung tuong dan ((toan tap) OR (toan ban))*.