Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
ty hang » ly hang, ty xang, thi hang
ty nang » ky nang, ty xang, ly nang
va cham » va chat, va tham
kinh va » kinh van, tinh va, sinh va
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ((ty nang) or (ty hang)) xa hoi. lieu va cham ((xuc va) or (tuc va)) kinh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((ty nang) OR (ty hang)) xa hoi. lieu va cham ((xuc va) OR (tuc va)) kinh va cua tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ((ty nang) or (ty hang)) xa hoi. lieu va cham ((xuc va) or (tuc va)) kinh va cua tre*.