Perhaps you should try some spelling variations:
nang doc » nang luc
va thanh » ban thanh, va tinh, le thanh
co sach » bo sach, cuon sach, hoc sach
doc hoi » duoc hoi, hoc hoi, doc hai
y nang » ky nang, ly nang, v nang
va cao » va co, va dao, va bao
di cua » dai cua, doi cua, de cua
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: co sach y nang doc hoi. lieu ((va cao) OR (va cac)) suc ((va thanh) or (gia thanh)) di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach y nang doc hoi. lieu ((va cao) OR (va cac)) suc ((va thanh) OR (gia thanh)) di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach y nang doc hoi. lieu ((va cao) OR (va cac)) suc ((va thanh) or (gia thanh)) di cua te".
• Adding a wildcard symbol may retrieve word variants: co sach y nang doc hoi. lieu ((va cao) OR (va cac)) suc ((va thanh) or (gia thanh)) di cua te*.