Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cham xuc » chat xuc, cham soc, pham duc
va danh » va dinh, va dan, va hanh
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
di cuu » di cua, dinh cuu
di cau » da cau, diem cau

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 sach y nang ma hoi. hieu ve ((cham xuc) OR (cam xuc)) va danh ((di cuu) OR (di cau)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y nang ma hoi. hieu ve ((cham xuc) or (cam xuc)) va danh ((di cuu) OR (di cau)) tre~".
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang ma hoi. hieu ve ((cham xuc) or (cam xuc)) va danh ((di cuu) OR (di cau)) tre*.