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

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 tai khoi. hieu ((ve cam) or (va cam)) 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 tai khoi. hieu ((ve cam) OR (va cam)) xuc va hanh tai ((cuu tre) OR (dau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang tai khoi. hieu ((ve cam) or (va cam)) xuc va hanh tai ((cuu tre) or (dau tren))*.