Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh ve » hanh ve, thanh va, thanh vien
duoc bat » duoc ban, duoc dat, duoc chat
duc bat » duc ban, duc bao, luc bat
su viet » so viet
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
va cao » va cac, va co, va dao
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 cao ((duc bat) OR (duoc bat)) thanh ve ((cua te) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y nang xa hoi. hieu va cao ((duc bat) OR (duoc bat)) thanh ve ((cua te) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y nang xa hoi. hieu va cao ((duc bat) OR (duoc bat)) thanh ve ((cua te) or (su viet))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y nang xa hoi. hieu va cao ((duc bat) OR (duoc bat)) thanh ve ((cua te) or (su viet))*.