Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
nam duoc » nam thuoc, da duoc, nam moc
dat duoc » dat nuoc, da duoc, luat duoc
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao duc » dao duc, cao suc, giao duc
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di 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: thuoc sach y nang xa hoi. hieu va ((((nam duoc) OR (dat duoc))) or (cao duc)) va thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang xa hoi. hieu va ((((nam duoc) OR (dat duoc))) OR (cao duc)) va thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang xa hoi. hieu va ((((nam duoc) OR (dat duoc))) or (cao duc)) va thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang xa hoi. hieu va ((((nam duoc) OR (dat duoc))) or (cao duc)) va thanh vi cua te*.