Perhaps you should try some spelling variations:
van chat » cao chat
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
cao hoc » co hoc, cho hoc, chat hoc
va cham » va chat, va tham
xa hanh » xa thanh, xa khanh, va hanh
hanh ve » hanh vi, hanh va, hanh kem
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang cao hoc. lieu ((va cham) or (van chat)) tuc xa hanh ve ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang cao hoc. lieu ((va cham) OR (van chat)) tuc xa hanh ve ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach ky nang cao hoc. lieu ((va cham) or (van chat)) tuc xa hanh ve ((cua tre) or (cua te))*.