Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
hai cua » thai cua, dai cua, hoi cua
va hanh » va thanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
sach ly » sach y, sach lo, sach ty
va cham » va chat, va tham
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang

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 ly nang xa hoi. hieu ((va cham) or (va cac)) luc ((va hanh) or (van hanh)) hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang xa hoi. hieu ((va cham) OR (va cac)) luc ((va hanh) OR (van hanh)) hai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ly nang xa hoi. hieu ((va cham) or (va cac)) luc ((va hanh) or (van hanh)) hai cua tre*.