Perhaps you should try some spelling variations:
cap nuoc » dat nuoc
so sanh » do sanh
danh de » hanh de, dan de, danh di
co sach » bo sach, cuon sach, hoc sach
ty nang » ky nang, ty xang, ty hang
dang de » dang deo, dung de, dang do
hieu ve » hieu va, hieu van
ve cap » ve cac, le cap, ve cai
nang o » nang co, nang ho, nang ro
cua te » cua tu
o hoi » co hoi, o hoc, o hai

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

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