Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh va » thanh van, hanh va, thanh ha
luc gia » luoc gia, duc gia, quoc gia
va chua » vua chua, ca chua, va chu
chua te » cua te, chua tu, chua xe
y nang » ky nang, ly nang, v nang
va cao » va cac, va co, va bao
va dao » ca dao
x hoi » o hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y nang ((x hoi) OR (xa hoi)). hieu ((va cao) or (va dao)) luc gia thanh va chua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang ((x hoi) OR (xa hoi)). hieu ((va cao) OR (va dao)) luc gia thanh va chua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang ((x hoi) OR (xa hoi)). hieu ((va cao) or (va dao)) luc gia thanh va chua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang ((x hoi) OR (xa hoi)). hieu ((va cao) or (va dao)) luc gia thanh va chua te*.