Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hiep cua » tiep cua, hieu cua, nghiep cua
hien cua » khien cua, dien cua, hieu cua
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
van cam » van nam, van lam, van cau
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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: tu sach ky tang xa hoi. hieu van cam ((xuc va) OR (tuc va)) thanh ((hiep cua) OR (hien cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky tang xa hoi. hieu van cam ((xuc va) or (tuc va)) thanh ((hiep cua) OR (hien cua)) te~".
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang xa hoi. hieu van cam ((xuc va) or (tuc va)) thanh ((hiep cua) OR (hien cua)) te*.