Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van thanh » ban thanh, van tuan
thanh va » thanh van, hanh va, thanh ha
va tham » van tham, va cham, va thanh
ly nang » ky nang, ly hang, ly vang
duc van » duc va, duc tan, duc manh
va cua » va chua, via cua, ca cua
cua te » cua tu
y nang » ky nang, v nang, may nang
va cai » va cac, va bai, va dai

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) OR (ly nang)) xa hoi. lieu ((va cai) or (va tham)) duc van thanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((y nang) OR (ly nang)) xa hoi. lieu ((va cai) OR (va tham)) duc van thanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((y nang) OR (ly nang)) xa hoi. lieu ((va cai) or (va tham)) duc van thanh va cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((y nang) OR (ly nang)) xa hoi. lieu ((va cai) or (va tham)) duc van thanh va cua te*.