Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
chat xuc » chat huu, cam xuc, chao xu
va thanh » gia thanh, ban thanh, va tinh
dau tren » dau tien, dat tren, dau tieng
cao hoi » cau hoi, co hoi, cao hoc
va chat » van chat, va phat, cao chat
va hanh » van hanh, va danh, ban hanh
cuu tre » cua tre, cau tren, cau treo
y nang » ky nang, ly nang, v nang

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 y nang cao hoi. lieu va chat xuc ((va hanh) or (va thanh)) vi ((cuu tre) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach y nang cao hoi. lieu va chat xuc ((va hanh) OR (va thanh)) vi ((cuu tre) OR (dau tren)).
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang cao hoi. lieu va chat xuc ((va hanh) or (va thanh)) vi ((cuu tre) or (dau tren))*.