Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
mai khoi » mai khoa, tai khoa, cac khoi
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
ve cam » ve cham, ve cac, va cam

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 ((ky lang) or (ky dang)) mai khoi. hieu ve cam xuc van hanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ((ky lang) OR (ky dang)) mai khoi. hieu ve cam xuc van hanh tai cuu tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ((ky lang) or (ky dang)) mai khoi. hieu ve cam xuc van hanh tai cuu tre*.