Perhaps you should try some spelling variations:
cap nuoc » dat nuoc
so sach » so sanh, bo sach, co sach
danh de » hanh de, dang de, danh di
ly nang » ky nang, ly hang, ly vang
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
dan de » dan den, dang de, van de
ve cap » ve cac, le cap, ve cai
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((ly nang) or (ty hang)) xa hoi. hieu ve cap nuoc va ((danh de) OR (dan de)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((ly nang) OR (ty hang)) xa hoi. hieu ve cap nuoc va ((danh de) OR (dan de)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((ly nang) or (ty hang)) xa hoi. hieu ve cap nuoc va ((danh de) OR (dan de)) cua te".
• Adding a wildcard symbol may retrieve word variants: so sach ((ly nang) or (ty hang)) xa hoi. hieu ve cap nuoc va ((danh de) OR (dan de)) cua te*.