Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
ty nang » ky nang, ty xang, ty hang
ly hang » ly quang
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
duc van » duc va, duc tan, duc manh
ve cac » va cac, vien cac
cua cu » cua chu, cua cau, cua su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((ty nang) OR (ly hang)) xa hoi. hieu ve cac duc van ((thanh vi) OR (thanh ve)) cua cu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((ty nang) or (ly hang)) xa hoi. hieu ve cac duc van ((thanh vi) OR (thanh ve)) cua cu~".
• Adding a wildcard symbol may retrieve word variants: toc sach ((ty nang) or (ly hang)) xa hoi. hieu ve cac duc van ((thanh vi) OR (thanh ve)) cua cu*.