Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
danh vai » danh sai, doanh van, dang van
hieu van » hieu va, thien van, lieu va
sach ky » sac ky, sach y, sach ty
danh va » doanh va, hanh va, anh va
lam xuc » cam xuc, lam duoc
van lam » van nam
tang ha » lang ha, tang ma, trung ha
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky tang ha hoi. hieu van lam xuc va ((danh vai) or (danh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky tang ha hoi. hieu van lam xuc va ((danh vai) OR (danh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: toc sach ky tang ha hoi. hieu van lam xuc va ((danh vai) or (danh va)) cua tre*.