Perhaps you should try some spelling variations:
cap nuoc » dat nuoc
co sach » bo sach, cuon sach, hoc sach
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
nang o » nang co, nang ho, nang ro
va cap » va cac, va dap, va cao
va dan » ca dan, va dao, va dau
dan di » danh di, dan da, dan de
di cua » dai cua, doi cua, de cua
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: ((do sanh) or (co sach)) ty nang o hoi. hieu va cap nuoc va dan di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((do sanh) OR (co sach)) ty nang o hoi. hieu va cap nuoc va dan di cua te*.