Perhaps you should try some spelling variations:
dau tren » dau tien, dat tren, dau tieng
lang mai » lang dai, lang hai, lang man
mai khoi » mai khoa, tai khoa, cac khoi
hanh tai » thanh tai, hang tai, han tai
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
ve cham » va cham, vu cham, ve chim
ky lang » ky nang, ky dang, ky tang
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky lang mai khoi. hieu ((ve cham) or (ve chat)) xuc va hanh tai ((cuu tre) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang mai khoi. hieu ((ve cham) OR (ve chat)) xuc va hanh tai ((cuu tre) OR (dau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang mai khoi. hieu ((ve cham) or (ve chat)) xuc va hanh tai ((cuu tre) or (dau tren))*.