Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
hieu ve » hieu va
sach ky » sac ky, sach y, sach ty
dang ma » dang mau, dang mam, dang mat
ky dang » ky nang, ky danh
vai cua » dai cua, hai cua, lai cua
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
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: toc sach ky dang ma hoi. ((hieu ve) or (hieu van)) cam ((xuc va) OR (tuc va)) thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky dang ma hoi. ((hieu ve) OR (hieu van)) cam ((xuc va) OR (tuc va)) thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky dang ma hoi. ((hieu ve) or (hieu van)) cam ((xuc va) OR (tuc va)) thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ky dang ma hoi. ((hieu ve) or (hieu van)) cam ((xuc va) OR (tuc va)) thanh vai cua te*.