Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
hoc sac » hoc sach, hoc cac, hoc mac
ky dang » ky nang, ky danh
dang ma » dang mau, dang mam, dang mat
cua tre » cuu tre, cua triet, dua tren
hieu ve » hieu va, hieu van
cua te » cua tu
luc va » tuc va, loc va
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa

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: hoc sac ky dang ma hoi. hieu ve cam ((duc va) OR (luc va)) thanh vai ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sac ky dang ma hoi. hieu ve cam ((duc va) or (luc va)) thanh vai ((cua tre) OR (cua te))~".
• Adding a wildcard symbol may retrieve word variants: hoc sac ky dang ma hoi. hieu ve cam ((duc va) or (luc va)) thanh vai ((cua tre) OR (cua te))*.